121223120220412 has 36 divisors (see below), whose sum is σ = 251431781718600. Its totient is φ = 50972524940064.

The previous prime is 121223120220409. The next prime is 121223120220421. The reversal of 121223120220412 is 214022021322121.

It is a super-2 number, since 2×121223120220412² (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 11 ways as a sum of consecutive naturals, for example, 5834756662 + ... + 5834777437.

It is an arithmetic number, because the mean of its divisors is an integer number (6984216158850).

Almost surely, 2^{121223120220412} is an apocalyptic number.

It is an amenable number.

121223120220412 is an abundant number, since it is smaller than the sum of its proper divisors (130208661498188).

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

121223120220412 is a wasteful number, since it uses less digits than its factorization.

121223120220412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11669534170 (or 11669534161 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 121223120220412 its reverse (214022021322121), we get a palindrome (335245141542533).

The spelling of 121223120220412 in words is "one hundred twenty-one trillion, two hundred twenty-three billion, one hundred twenty million, two hundred twenty thousand, four hundred twelve".