121101221021022 has 128 divisors (see below), whose sum is σ = 296911632568320. Its totient is φ = 36282089236320.

The previous prime is 121101221020961. The next prime is 121101221021059. The reversal of 121101221021022 is 220120122101121.

121101221021022 is a `hidden beast` number, since 1 + 211 + 0 + 1 + 221 + 0 + 210 + 22 = 666.

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 = 121101221020986 and 121101221021004.

It is a congruent number.

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, 30075673 + ... + 33863675.

It is an arithmetic number, because the mean of its divisors is an integer number (2319622129440).

Almost surely, 2^{121101221021022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121101221021022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148455816284160).

121101221021022 is an abundant number, since it is smaller than the sum of its proper divisors (175810411547298).

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

121101221021022 is a wasteful number, since it uses less digits than its factorization.

121101221021022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788635 (or 3788629 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121101221021022 its reverse (220120122101121), we get a palindrome (341221343122143).

The spelling of 121101221021022 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred twenty-one million, twenty-one thousand, twenty-two".