121200221100002 has 16 divisors (see below), whose sum is σ = 198409894105824. Its totient is φ = 55068159708000.

The previous prime is 121200221100001. The next prime is 121200221100029. The reversal of 121200221100002 is 200001122002121.

It is a self number, because there is not a number n which added to its sum of digits gives 121200221100002.

It is not an unprimeable number, because it can be changed into a prime (121200221100001) 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, 1142439899 + ... + 1142545982.

It is an arithmetic number, because the mean of its divisors is an integer number (12400618381614).

Almost surely, 2^{121200221100002} is an apocalyptic number.

121200221100002 is a deficient number, since it is larger than the sum of its proper divisors (77209673005822).

121200221100002 is a wasteful number, since it uses less digits than its factorization.

121200221100002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284988305.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121200221100002 its reverse (200001122002121), we get a palindrome (321201343102123).

The spelling of 121200221100002 in words is "one hundred twenty-one trillion, two hundred billion, two hundred twenty-one million, one hundred thousand, two".