20122212222210 has 192 divisors, whose sum is σ = 59423477167872. Its totient is φ = 4339124342784.

The previous prime is 20122212222197. The next prime is 20122212222271. The reversal of 20122212222210 is 1222221222102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1608279 + ... + 6544538.

It is an arithmetic number, because the mean of its divisors is an integer number (309497276916).

Almost surely, 2^{20122212222210} is an apocalyptic number.

20122212222210 is an abundant number, since it is smaller than the sum of its proper divisors (39301264945662).

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

20122212222210 is a wasteful number, since it uses less digits than its factorization.

20122212222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8152937 (or 8152930 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20122212222210 its reverse (1222221222102), we get a palindrome (21344433444312).

The spelling of 20122212222210 in words is "twenty trillion, one hundred twenty-two billion, two hundred twelve million, two hundred twenty-two thousand, two hundred ten".