121121122221002 has 32 divisors (see below), whose sum is σ = 182908914312000. Its totient is φ = 60151954278528.

The previous prime is 121121122220941. The next prime is 121121122221037. The reversal of 121121122221002 is 200122221121121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3883440824 + ... + 3883472012.

It is an arithmetic number, because the mean of its divisors is an integer number (5715903572250).

Almost surely, 2^{121121122221002} is an apocalyptic number.

121121122221002 is a deficient number, since it is larger than the sum of its proper divisors (61787792090998).

121121122221002 is a wasteful number, since it uses less digits than its factorization.

121121122221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38310.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 121121122221002 its reverse (200122221121121), we get a palindrome (321243343342123).

The spelling of 121121122221002 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, two".