2021211132220 has 72 divisors (see below), whose sum is σ = 4963113573264. Its totient is φ = 689396004864.

The previous prime is 2021211132167. The next prime is 2021211132251. The reversal of 2021211132220 is 222311121202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5154022 + ... + 5532301.

It is an arithmetic number, because the mean of its divisors is an integer number (68932132962).

Almost surely, 2^{2021211132220} is an apocalyptic number.

2021211132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021211132220 is an abundant number, since it is smaller than the sum of its proper divisors (2941902441044).

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

2021211132220 is a wasteful number, since it uses less digits than its factorization.

2021211132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686539 (or 10686530 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2021211132220 its reverse (222311121202), we get a palindrome (2243522253422).

The spelling of 2021211132220 in words is "two trillion, twenty-one billion, two hundred eleven million, one hundred thirty-two thousand, two hundred twenty".