121202020044 has 36 divisors (see below), whose sum is σ = 350139169744. Its totient is φ = 34629148512.

The previous prime is 121202020019. The next prime is 121202020099. The reversal of 121202020044 is 440020202121.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121202019999 and 121202020026.

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, 240479947 + ... + 240480450.

Almost surely, 2^121202020044 is an apocalyptic number.

121202020044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121202020044 is an abundant number, since it is smaller than the sum of its proper divisors (228937149700).

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

121202020044 is a wasteful number, since it uses less digits than its factorization.

121202020044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480960414 (or 480960409 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 121202020044 its reverse (440020202121), we get a palindrome (561222222165).

The spelling of 121202020044 in words is "one hundred twenty-one billion, two hundred two million, twenty thousand, forty-four".