121200220021002 has 16 divisors (see below), whose sum is σ = 242401007151360. Its totient is φ = 40399978822112.

The previous prime is 121200220020977. The next prime is 121200220021003. The reversal of 121200220021002 is 200120022002121.

It is not an unprimeable number, because it can be changed into a prime (121200220021003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20825658 + ... + 26002085.

It is an arithmetic number, because the mean of its divisors is an integer number (15150062946960).

Almost surely, 2^{121200220021002} is an apocalyptic number.

121200220021002 is an abundant number, since it is smaller than the sum of its proper divisors (121200787130358).

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

121200220021002 is a wasteful number, since it uses less digits than its factorization.

121200220021002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47259117.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121200220021002 its reverse (200120022002121), we get a palindrome (321320242023123).

The spelling of 121200220021002 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twenty million, twenty-one thousand, two".