212122121220102 has 32 divisors (see below), whose sum is σ = 445843100812032. Its totient is φ = 67196448202464.

The previous prime is 212122121220083. The next prime is 212122121220137. The reversal of 212122121220102 is 201022121221212.

It is a super-2 number, since 2×212122121220102² (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 15 ways as a sum of consecutive naturals, for example, 11110514298 + ... + 11110533389.

It is an arithmetic number, because the mean of its divisors is an integer number (13932596900376).

Almost surely, 2^{212122121220102} is an apocalyptic number.

212122121220102 is an abundant number, since it is smaller than the sum of its proper divisors (233720979591930).

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

212122121220102 is a wasteful number, since it uses less digits than its factorization.

212122121220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22221047772.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 212122121220102 its reverse (201022121221212), we get a palindrome (413144242441314).

The spelling of 212122121220102 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty thousand, one hundred two".