211220233242 has 32 divisors (see below), whose sum is σ = 425446560000. Its totient is φ = 69906109248.

The previous prime is 211220233219. The next prime is 211220233321. The reversal of 211220233242 is 242332022112.

It is a super-2 number, since 2×211220233242² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2239759 + ... + 2332157.

It is an arithmetic number, because the mean of its divisors is an integer number (13295205000).

Almost surely, 2^211220233242 is an apocalyptic number.

211220233242 is an abundant number, since it is smaller than the sum of its proper divisors (214226326758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211220233242 is a wasteful number, since it uses less digits than its factorization.

211220233242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95110.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 211220233242 its reverse (242332022112), we get a palindrome (453552255354).

The spelling of 211220233242 in words is "two hundred eleven billion, two hundred twenty million, two hundred thirty-three thousand, two hundred forty-two".