211022231442 has 64 divisors (see below), whose sum is σ = 464543614080. Its totient is φ = 63374745600.

The previous prime is 211022231419. The next prime is 211022231443. The reversal of 211022231442 is 244132220112.

It is a super-2 number, since 2×211022231442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211022231443) 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, 3470034 + ... + 3530322.

It is an arithmetic number, because the mean of its divisors is an integer number (7258493970).

Almost surely, 2^211022231442 is an apocalyptic number.

211022231442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211022231442 is an abundant number, since it is smaller than the sum of its proper divisors (253521382638).

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

211022231442 is a wasteful number, since it uses less digits than its factorization.

211022231442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60779.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 211022231442 its reverse (244132220112), we get a palindrome (455154451554).

The spelling of 211022231442 in words is "two hundred eleven billion, twenty-two million, two hundred thirty-one thousand, four hundred forty-two".