212101622140 has 48 divisors (see below), whose sum is σ = 451141447680. Its totient is φ = 83750022720.

The previous prime is 212101622113. The next prime is 212101622179. The reversal of 212101622140 is 41226101212.

It is a super-2 number, since 2×212101622140² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 10561749 + ... + 10581811.

It is an arithmetic number, because the mean of its divisors is an integer number (9398780160).

Almost surely, 2^212101622140 is an apocalyptic number.

212101622140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101622140 is an abundant number, since it is smaller than the sum of its proper divisors (239039825540).

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

212101622140 is a wasteful number, since it uses less digits than its factorization.

212101622140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26842 (or 26840 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212101622140 its reverse (41226101212), we get a palindrome (253327723352).

The spelling of 212101622140 in words is "two hundred twelve billion, one hundred one million, six hundred twenty-two thousand, one hundred forty".