2021135126502 has 16 divisors (see below), whose sum is σ = 4044785686272. Its totient is φ = 673292469960.

The previous prime is 2021135126477. The next prime is 2021135126513. The reversal of 2021135126502 is 2056215311202.

It is a super-3 number, since 3×2021135126502³ (a number of 38 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2021135126502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104799274 + ... + 104818557.

It is an arithmetic number, because the mean of its divisors is an integer number (252799105392).

Almost surely, 2^{2021135126502} is an apocalyptic number.

2021135126502 is an abundant number, since it is smaller than the sum of its proper divisors (2023650559770).

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

2021135126502 is a wasteful number, since it uses less digits than its factorization.

2021135126502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209619443.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 2021135126502 in words is "two trillion, twenty-one billion, one hundred thirty-five million, one hundred twenty-six thousand, five hundred two".