121020020022 has 64 divisors (see below), whose sum is σ = 278304364800. Its totient is φ = 34697134080.

The previous prime is 121020019993. The next prime is 121020020027. The reversal of 121020020022 is 220020020121.

It is a super-2 number, since 2×121020020022² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020020027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 901578 + ... + 1027074.

It is an arithmetic number, because the mean of its divisors is an integer number (4348505700).

Almost surely, 2^121020020022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020020022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139152182400).

121020020022 is an abundant number, since it is smaller than the sum of its proper divisors (157284344778).

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

121020020022 is a wasteful number, since it uses less digits than its factorization.

121020020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126301.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 121020020022 its reverse (220020020121), we get a palindrome (341040040143).

Subtracting 121020020022 from its reverse (220020020121), we obtain a palindrome (99000000099).

The spelling of 121020020022 in words is "one hundred twenty-one billion, twenty million, twenty thousand, twenty-two".