210012231021 has 16 divisors (see below), whose sum is σ = 287041524480. Its totient is φ = 136538645760.

The previous prime is 210012231019. The next prime is 210012231043. The reversal of 210012231021 is 120132210012.

It is not a de Polignac number, because 210012231021 - 2¹ = 210012231019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210012231421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5367925 + ... + 5406906.

It is an arithmetic number, because the mean of its divisors is an integer number (17940095280).

Almost surely, 2^210012231021 is an apocalyptic number.

It is an amenable number.

210012231021 is a deficient number, since it is larger than the sum of its proper divisors (77029293459).

210012231021 is a wasteful number, since it uses less digits than its factorization.

210012231021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10774996.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 210012231021 its reverse (120132210012), we get a palindrome (330144441033).

The spelling of 210012231021 in words is "two hundred ten billion, twelve million, two hundred thirty-one thousand, twenty-one".