211021012258 has 32 divisors (see below), whose sum is σ = 362356702848. Its totient is φ = 90286099200.

The previous prime is 211021012217. The next prime is 211021012259. The reversal of 211021012258 is 852210120112.

It is a happy number.

It is a super-2 number, since 2×211021012258² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211021012259) 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, 31534693 + ... + 31541383.

It is an arithmetic number, because the mean of its divisors is an integer number (11323646964).

Almost surely, 2^211021012258 is an apocalyptic number.

211021012258 is a deficient number, since it is larger than the sum of its proper divisors (151335690590).

211021012258 is a wasteful number, since it uses less digits than its factorization.

211021012258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10138.

The product of its (nonzero) digits is 640, while the sum is 25.

The spelling of 211021012258 in words is "two hundred eleven billion, twenty-one million, twelve thousand, two hundred fifty-eight".