121022120222220 has 192 divisors, whose sum is σ = 389910407040000. Its totient is φ = 27473693045760.

The previous prime is 121022120222219. The next prime is 121022120222293. The reversal of 121022120222220 is 22222021220121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 634528431 + ... + 634719129.

It is an arithmetic number, because the mean of its divisors is an integer number (2030783370000).

Almost surely, 2^{121022120222220} is an apocalyptic number.

121022120222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121022120222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194955203520000).

121022120222220 is an abundant number, since it is smaller than the sum of its proper divisors (268888286817780).

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

121022120222220 is a wasteful number, since it uses less digits than its factorization.

121022120222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201008 (or 201006 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 121022120222220 its reverse (22222021220121), we get a palindrome (143244141442341).

The spelling of 121022120222220 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred twenty million, two hundred twenty-two thousand, two hundred twenty".