201011202021 has 24 divisors (see below), whose sum is σ = 314859356064. Its totient is φ = 113726272800.

The previous prime is 201011201921. The next prime is 201011202023. The reversal of 201011202021 is 120202110102.

It is not a de Polignac number, because 201011202021 - 2¹¹ = 201011199973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201011201988 and 201011202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011202023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6754575 + ... + 6784268.

It is an arithmetic number, because the mean of its divisors is an integer number (13119139836).

Almost surely, 2^201011202021 is an apocalyptic number.

201011202021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201011202021 is a deficient number, since it is larger than the sum of its proper divisors (113848154043).

201011202021 is a wasteful number, since it uses less digits than its factorization.

201011202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13538961 (or 13538954 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201011202021 its reverse (120202110102), we get a palindrome (321213312123).

The spelling of 201011202021 in words is "two hundred one billion, eleven million, two hundred two thousand, twenty-one".