102021211120220 has 144 divisors (see below), whose sum is σ = 258724166238720. Its totient is φ = 33098206255488.

The previous prime is 102021211120193. The next prime is 102021211120243. The reversal of 102021211120220 is 22021112120201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41200067 + ... + 43606053.

It is an arithmetic number, because the mean of its divisors is an integer number (1796695598880).

Almost surely, 2^{102021211120220} is an apocalyptic number.

102021211120220 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 102021211120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129362083119360).

102021211120220 is an abundant number, since it is smaller than the sum of its proper divisors (156702955118500).

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

102021211120220 is a wasteful number, since it uses less digits than its factorization.

102021211120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2406880 (or 2406859 counting only the distinct ones).

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

Adding to 102021211120220 its reverse (22021112120201), we get a palindrome (124042323240421).

The spelling of 102021211120220 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred twenty thousand, two hundred twenty".