2021031502056 has 192 divisors, whose sum is σ = 6529282456320. Its totient is φ = 552185441280.

The previous prime is 2021031502019. The next prime is 2021031502057. The reversal of 2021031502056 is 6502051301202.

It is a happy number.

2021031502056 is a `hidden beast` number, since 2 + 0 + 2 + 103 + 1 + 502 + 0 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (2021031502057) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48120586 + ... + 48162566.

It is an arithmetic number, because the mean of its divisors is an integer number (34006679460).

Almost surely, 2^{2021031502056} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021031502056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3264641228160).

2021031502056 is an abundant number, since it is smaller than the sum of its proper divisors (4508250954264).

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

2021031502056 is a wasteful number, since it uses less digits than its factorization.

2021031502056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46176 (or 46169 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 2021031502056 its reverse (6502051301202), we get a palindrome (8523082803258).

The spelling of 2021031502056 in words is "two trillion, twenty-one billion, thirty-one million, five hundred two thousand, fifty-six".