210221220122012 has 12 divisors (see below), whose sum is σ = 401331420233016. Its totient is φ = 95555100055440.

The previous prime is 210221220121987. The next prime is 210221220122029. The reversal of 210221220122012 is 210221022122012.

It is a super-2 number, since 2×210221220122012² (a number of 29 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 3 ways as a sum of consecutive naturals, for example, 2388877501343 + ... + 2388877501430.

It is an arithmetic number, because the mean of its divisors is an integer number (33444285019418).

Almost surely, 2^{210221220122012} is an apocalyptic number.

210221220122012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210221220122012 is a deficient number, since it is larger than the sum of its proper divisors (191110200111004).

210221220122012 is a wasteful number, since it uses less digits than its factorization.

210221220122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4777755002788 (or 4777755002786 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210221220122012 its reverse (210221022122012), we get a palindrome (420442242244024).

The spelling of 210221220122012 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twenty-two thousand, twelve".