2021111010102 has 16 divisors (see below), whose sum is σ = 4047218596080. Its totient is φ = 672870907392.

The previous prime is 2021111010101. The next prime is 2021111010109. The reversal of 2021111010102 is 2010101111202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021111010101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208185403 + ... + 208195110.

It is an arithmetic number, because the mean of its divisors is an integer number (252951162255).

Almost surely, 2^{2021111010102} is an apocalyptic number.

2021111010102 is an abundant number, since it is smaller than the sum of its proper divisors (2026107585978).

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

2021111010102 is a wasteful number, since it uses less digits than its factorization.

2021111010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416381327.

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

Adding to 2021111010102 its reverse (2010101111202), we get a palindrome (4031212121304).

The spelling of 2021111010102 in words is "two trillion, twenty-one billion, one hundred eleven million, ten thousand, one hundred two".