202012011111021 has 8 divisors (see below), whose sum is σ = 269440994756640. Its totient is φ = 134628850769712.

The previous prime is 202012011111019. The next prime is 202012011111049. The reversal of 202012011111021 is 120111110210202.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202012011111021 - 2¹ = 202012011111019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202012011111121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11455815790 + ... + 11455833423.

It is an arithmetic number, because the mean of its divisors is an integer number (33680124344580).

Almost surely, 2^{202012011111021} is an apocalyptic number.

It is an amenable number.

202012011111021 is a deficient number, since it is larger than the sum of its proper divisors (67428983645619).

202012011111021 is a wasteful number, since it uses less digits than its factorization.

202012011111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22911652155.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 202012011111021 its reverse (120111110210202), we get a palindrome (322123121321223).

The spelling of 202012011111021 in words is "two hundred two trillion, twelve billion, eleven million, one hundred eleven thousand, twenty-one".