102021111120000 has 320 divisors, whose sum is σ = 338810299248960. Its totient is φ = 27191431680000.

The previous prime is 102021111119969. The next prime is 102021111120001. The reversal of 102021111120000 is 21111120201.

It is a tau number, because it is divible by the number of its divisors (320).

It is a super-2 number, since 2×102021111120000² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (102021111120001) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 463810045 + ... + 464029955.

It is an arithmetic number, because the mean of its divisors is an integer number (1058782185153).

Almost surely, 2^{102021111120000} is an apocalyptic number.

102021111120000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102021111120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169405149624480).

102021111120000 is an abundant number, since it is smaller than the sum of its proper divisors (236789188128960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021111120000 is an equidigital number, since it uses as much as digits as its factorization.

102021111120000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221881 (or 221854 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102021111120000 its reverse (21111120201), we get a palindrome (102042222240201).

The spelling of 102021111120000 in words is "one hundred two trillion, twenty-one billion, one hundred eleven million, one hundred twenty thousand".