121222022020 has 24 divisors (see below), whose sum is σ = 277708632768. Its totient is φ = 44080735200.

The previous prime is 121222021981. The next prime is 121222022029. The reversal of 121222022020 is 20220222121.

It is a super-3 number, since 3×121222022020³ (a number of 34 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121222021985 and 121222022003.

It is not an unprimeable number, because it can be changed into a prime (121222022029) 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, 275504376 + ... + 275504815.

It is an arithmetic number, because the mean of its divisors is an integer number (11571193032).

Almost surely, 2^121222022020 is an apocalyptic number.

121222022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121222022020 is an abundant number, since it is smaller than the sum of its proper divisors (156486610748).

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

121222022020 is a wasteful number, since it uses less digits than its factorization.

121222022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551009211 (or 551009209 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 121222022020 its reverse (20220222121), we get a palindrome (141442244141).

The spelling of 121222022020 in words is "one hundred twenty-one billion, two hundred twenty-two million, twenty-two thousand, twenty".