102021211111120 has 120 divisors (see below), whose sum is σ = 280602442749600. Its totient is φ = 34385841536256.

The previous prime is 102021211111093. The next prime is 102021211111121. The reversal of 102021211111120 is 21111112120201.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 102021211111094 and 102021211111103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021211111121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 220326510 + ... + 220789069.

It is an arithmetic number, because the mean of its divisors is an integer number (2338353689580).

Almost surely, 2^{102021211111120} is an apocalyptic number.

102021211111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102021211111120 is an abundant number, since it is smaller than the sum of its proper divisors (178581231638480).

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

102021211111120 is a wasteful number, since it uses less digits than its factorization.

102021211111120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 441115665 (or 441115652 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 102021211111120 its reverse (21111112120201), we get a palindrome (123132323231321).

The spelling of 102021211111120 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred twenty".