212022012100 has 36 divisors (see below), whose sum is σ = 460305966484. Its totient is φ = 84768583680.

The previous prime is 212022012089. The next prime is 212022012109. The reversal of 212022012100 is 1210220212.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 97508805696 + 114513206404 = 312264^2 + 338398^2 .

It is a super-2 number, since 2×212022012100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212022012109) 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, 290409 + ... + 713008.

Almost surely, 2^212022012100 is an apocalyptic number.

212022012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212022012100 is an abundant number, since it is smaller than the sum of its proper divisors (248283954384).

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

212022012100 is a wasteful number, since it uses less digits than its factorization.

212022012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005544 (or 1005537 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212022012100 its reverse (1210220212), we get a palindrome (213232232312).

It can be divided in two parts, 21202 and 2012100, that added together give a palindrome (2033302).

The spelling of 212022012100 in words is "two hundred twelve billion, twenty-two million, twelve thousand, one hundred".