102021111202220 has 96 divisors (see below), whose sum is σ = 250910651690496. Its totient is φ = 34113553344000.

The previous prime is 102021111202201. The next prime is 102021111202223. The reversal of 102021111202220 is 22202111120201.

It is not an unprimeable number, because it can be changed into a prime (102021111202223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13247639 + ... + 19481841.

It is an arithmetic number, because the mean of its divisors is an integer number (2613652621776).

Almost surely, 2^{102021111202220} is an apocalyptic number.

102021111202220 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 102021111202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125455325845248).

102021111202220 is an abundant number, since it is smaller than the sum of its proper divisors (148889540488276).

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

102021111202220 is a wasteful number, since it uses less digits than its factorization.

102021111202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237111 (or 6237109 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 102021111202220 its reverse (22202111120201), we get a palindrome (124223222322421).

The spelling of 102021111202220 in words is "one hundred two trillion, twenty-one billion, one hundred eleven million, two hundred two thousand, two hundred twenty".