122121222210100 has 108 divisors (see below), whose sum is σ = 284425084692000. Its totient is φ = 45493150317120.

The previous prime is 122121222210049. The next prime is 122121222210101. The reversal of 122121222210100 is 1012222121221.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121222210101) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26538400 + ... + 30798199.

It is an arithmetic number, because the mean of its divisors is an integer number (2633565599000).

Almost surely, 2^{122121222210100} is an apocalyptic number.

122121222210100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122121222210100 is an abundant number, since it is smaller than the sum of its proper divisors (162303862481900).

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

122121222210100 is a wasteful number, since it uses less digits than its factorization.

122121222210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57336710 (or 57336684 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 122121222210100 its reverse (1012222121221), we get a palindrome (123133444331321).

The spelling of 122121222210100 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two million, two hundred ten thousand, one hundred".