201220022112 has 48 divisors (see below), whose sum is σ = 542478312432. Its totient is φ = 65260546560.

The previous prime is 201220022057. The next prime is 201220022131. The reversal of 201220022112 is 211220022102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 201220022091 and 201220022100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28321339 + ... + 28328442.

It is an arithmetic number, because the mean of its divisors is an integer number (11301631509).

Almost surely, 2^201220022112 is an apocalyptic number.

It is an amenable number.

201220022112 is an abundant number, since it is smaller than the sum of its proper divisors (341258290320).

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

201220022112 is a wasteful number, since it uses less digits than its factorization.

201220022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56649831 (or 56649823 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201220022112 its reverse (211220022102), we get a palindrome (412440044214).

The spelling of 201220022112 in words is "two hundred one billion, two hundred twenty million, twenty-two thousand, one hundred twelve".