210201001020021 has 32 divisors (see below), whose sum is σ = 307549004193792. Its totient is φ = 126643840263360.

The previous prime is 210201001019987. The next prime is 210201001020067. The reversal of 210201001020021 is 120020100102012.

It is not a de Polignac number, because 210201001020021 - 2²⁷ = 210200866802293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210201001019979 and 210201001020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201001020421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48521736 + ... + 52675998.

It is an arithmetic number, because the mean of its divisors is an integer number (9610906381056).

Almost surely, 2^{210201001020021} is an apocalyptic number.

It is an amenable number.

210201001020021 is a deficient number, since it is larger than the sum of its proper divisors (97348003173771).

210201001020021 is a wasteful number, since it uses less digits than its factorization.

210201001020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4163313.

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

Adding to 210201001020021 its reverse (120020100102012), we get a palindrome (330221101122033).

The spelling of 210201001020021 in words is "two hundred ten trillion, two hundred one billion, one million, twenty thousand, twenty-one".