2021111202090 has 32 divisors (see below), whose sum is σ = 4851053101440. Its totient is φ = 538920074304.

The previous prime is 2021111202049. The next prime is 2021111202091. The reversal of 2021111202090 is 902021111202.

It is a super-3 number, since 3×2021111202090³ (a number of 38 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (2021111202091) 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, 2298094 + ... + 3053433.

It is an arithmetic number, because the mean of its divisors is an integer number (151595409420).

Almost surely, 2^{2021111202090} is an apocalyptic number.

2021111202090 is an abundant number, since it is smaller than the sum of its proper divisors (2829941899350).

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

2021111202090 is a wasteful number, since it uses less digits than its factorization.

2021111202090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5364126.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 2021111202090 its reverse (902021111202), we get a palindrome (2923132313292).

The spelling of 2021111202090 in words is "two trillion, twenty-one billion, one hundred eleven million, two hundred two thousand, ninety".