121220022212 has 24 divisors (see below), whose sum is σ = 218281140000. Its totient is φ = 58869732096.

The previous prime is 121220022199. The next prime is 121220022239. The reversal of 121220022212 is 212220022121.

It is a happy 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, 1937837 + ... + 1999412.

It is an arithmetic number, because the mean of its divisors is an integer number (9095047500).

Almost surely, 2^121220022212 is an apocalyptic number.

It is an amenable number.

121220022212 is a deficient number, since it is larger than the sum of its proper divisors (97061117788).

121220022212 is a wasteful number, since it uses less digits than its factorization.

121220022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3937475 (or 3937473 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121220022212 its reverse (212220022121), we get a palindrome (333440044333).

Subtracting 121220022212 from its reverse (212220022121), we obtain a palindrome (90999999909).

The spelling of 121220022212 in words is "one hundred twenty-one billion, two hundred twenty million, twenty-two thousand, two hundred twelve".