121220022012 has 12 divisors (see below), whose sum is σ = 282846718056. Its totient is φ = 40406674000.

The previous prime is 121220021999. The next prime is 121220022067. The reversal of 121220022012 is 210220022121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 121220021982 and 121220022000.

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, 5050834239 + ... + 5050834262.

It is an arithmetic number, because the mean of its divisors is an integer number (23570559838).

Almost surely, 2^121220022012 is an apocalyptic number.

121220022012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121220022012 is an abundant number, since it is smaller than the sum of its proper divisors (161626696044).

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

121220022012 is a wasteful number, since it uses less digits than its factorization.

121220022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10101668508 (or 10101668506 counting only the distinct ones).

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

Adding to 121220022012 its reverse (210220022121), we get a palindrome (331440044133).

The spelling of 121220022012 in words is "one hundred twenty-one billion, two hundred twenty million, twenty-two thousand, twelve".