121102222122200 has 192 divisors, whose sum is σ = 310228571600640. Its totient is φ = 43597208000000.

The previous prime is 121102222122113. The next prime is 121102222122353. The reversal of 121102222122200 is 2221222201121.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3695391815 + ... + 3695424585.

It is an arithmetic number, because the mean of its divisors is an integer number (1615773810420).

Almost surely, 2^{121102222122200} is an apocalyptic number.

121102222122200 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 121102222122200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155114285800320).

121102222122200 is an abundant number, since it is smaller than the sum of its proper divisors (189126349478440).

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

121102222122200 is a wasteful number, since it uses less digits than its factorization.

121102222122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49530 (or 49521 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 121102222122200 its reverse (2221222201121), we get a palindrome (123323444323321).

The spelling of 121102222122200 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred".