121002021202220 has 24 divisors (see below), whose sum is σ = 254104573691808. Its totient is φ = 48400745782400.

The previous prime is 121002021202201. The next prime is 121002021202229. The reversal of 121002021202220 is 22202120200121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121002021202229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13877825 + ... + 20847015.

It is an arithmetic number, because the mean of its divisors is an integer number (10587690570492).

Almost surely, 2^{121002021202220} is an apocalyptic number.

121002021202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002021202220 is an abundant number, since it is smaller than the sum of its proper divisors (133102552489588).

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

121002021202220 is a wasteful number, since it uses less digits than its factorization.

121002021202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7837321 (or 7837319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 121002021202220 its reverse (22202120200121), we get a palindrome (143204141402341).

The spelling of 121002021202220 in words is "one hundred twenty-one trillion, two billion, twenty-one million, two hundred two thousand, two hundred twenty".