210012201021 has 64 divisors (see below), whose sum is σ = 334332059648. Its totient is φ = 114759203328.

The previous prime is 210012201001. The next prime is 210012201031. The reversal of 210012201021 is 120102210012.

It is not a de Polignac number, because 210012201021 - 2²¹ = 210010103869 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210012200988 and 210012201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012201001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24098961 + ... + 24107673.

It is an arithmetic number, because the mean of its divisors is an integer number (5223938432).

Almost surely, 2^210012201021 is an apocalyptic number.

210012201021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

210012201021 is a deficient number, since it is larger than the sum of its proper divisors (124319858627).

210012201021 is a wasteful number, since it uses less digits than its factorization.

210012201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9290.

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

Adding to 210012201021 its reverse (120102210012), we get a palindrome (330114411033).

The spelling of 210012201021 in words is "two hundred ten billion, twelve million, two hundred one thousand, twenty-one".