212202102042 has 24 divisors (see below), whose sum is σ = 525452824416. Its totient is φ = 60629171976.

The previous prime is 212202102017. The next prime is 212202102043. The reversal of 212202102042 is 240201202212.

It is a super-2 number, since 2×212202102042² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (212202102043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 842071708 + ... + 842071959.

It is an arithmetic number, because the mean of its divisors is an integer number (21893867684).

Almost surely, 2^212202102042 is an apocalyptic number.

212202102042 is an abundant number, since it is smaller than the sum of its proper divisors (313250722374).

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

212202102042 is a wasteful number, since it uses less digits than its factorization.

212202102042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684143682 (or 1684143679 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 212202102042 its reverse (240201202212), we get a palindrome (452403304254).

The spelling of 212202102042 in words is "two hundred twelve billion, two hundred two million, one hundred two thousand, forty-two".