121433242220 has 48 divisors (see below), whose sum is σ = 263840068800. Its totient is φ = 46891810560.

The previous prime is 121433242219. The next prime is 121433242279. The reversal of 121433242220 is 22242334121.

It is a super-2 number, since 2×121433242220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121433242220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7293305 + ... + 7309935.

It is an arithmetic number, because the mean of its divisors is an integer number (5496668100).

Almost surely, 2^121433242220 is an apocalyptic number.

121433242220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121433242220 is an abundant number, since it is smaller than the sum of its proper divisors (142406826580).

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

121433242220 is a wasteful number, since it uses less digits than its factorization.

121433242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258 (or 29256 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 121433242220 its reverse (22242334121), we get a palindrome (143675576341).

The spelling of 121433242220 in words is "one hundred twenty-one billion, four hundred thirty-three million, two hundred forty-two thousand, two hundred twenty".