20111021031102 has 32 divisors (see below), whose sum is σ = 41352497450880. Its totient is φ = 6516742165920.

The previous prime is 20111021031083. The next prime is 20111021031151. The reversal of 20111021031102 is 20113012011102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184660477 + ... + 184769352.

It is an arithmetic number, because the mean of its divisors is an integer number (1292265545340).

Almost surely, 2^{20111021031102} is an apocalyptic number.

20111021031102 is an abundant number, since it is smaller than the sum of its proper divisors (21241476419778).

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

20111021031102 is a wasteful number, since it uses less digits than its factorization.

20111021031102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369430088.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 20111021031102 its reverse (20113012011102), we get a palindrome (40224033042204).

The spelling of 20111021031102 in words is "twenty trillion, one hundred eleven billion, twenty-one million, thirty-one thousand, one hundred two".