121220033212 has 24 divisors (see below), whose sum is σ = 230503293440. Its totient is φ = 55567756080.

The previous prime is 121220033189. The next prime is 121220033251. The reversal of 121220033212 is 212330022121.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 121220033212.

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, 25723458 + ... + 25728169.

Almost surely, 2^121220033212 is an apocalyptic number.

It is an amenable number.

121220033212 is a deficient number, since it is larger than the sum of its proper divisors (109283260228).

121220033212 is a wasteful number, since it uses less digits than its factorization.

121220033212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51451681 (or 51451679 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121220033212 its reverse (212330022121), we get a palindrome (333550055333).

The spelling of 121220033212 in words is "one hundred twenty-one billion, two hundred twenty million, thirty-three thousand, two hundred twelve".