121122121210002 has 24 divisors (see below), whose sum is σ = 286288650133200. Its totient is φ = 36703673093880.

The previous prime is 121122121209967. The next prime is 121122121210031. The reversal of 121122121210002 is 200012121221121.

121122121210002 is a `hidden beast` number, since 1 + 211 + 221 + 21 + 210 + 0 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 305863942252 + ... + 305863942647.

It is an arithmetic number, because the mean of its divisors is an integer number (11928693755550).

Almost surely, 2^{121122121210002} is an apocalyptic number.

121122121210002 is an abundant number, since it is smaller than the sum of its proper divisors (165166528923198).

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

121122121210002 is a wasteful number, since it uses less digits than its factorization.

121122121210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611727884918 (or 611727884915 counting only the distinct ones).

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

Adding to 121122121210002 its reverse (200012121221121), we get a palindrome (321134242431123).

The spelling of 121122121210002 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred ten thousand, two".