2021021211102 has 32 divisors (see below), whose sum is σ = 4050966569760. Its totient is φ = 672187998720.

The previous prime is 2021021211073. The next prime is 2021021211103. The reversal of 2021021211102 is 2011121201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021021211103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4812652 + ... + 5215712.

It is an arithmetic number, because the mean of its divisors is an integer number (126592705305).

Almost surely, 2^{2021021211102} is an apocalyptic number.

2021021211102 is an abundant number, since it is smaller than the sum of its proper divisors (2029945358658).

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

2021021211102 is a wasteful number, since it uses less digits than its factorization.

2021021211102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404908.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2021021211102 its reverse (2011121201202), we get a palindrome (4032142412304).

The spelling of 2021021211102 in words is "two trillion, twenty-one billion, twenty-one million, two hundred eleven thousand, one hundred two".