121221321212002 has 32 divisors (see below), whose sum is σ = 199812684672000. Its totient is φ = 54698177826000.

The previous prime is 121221321211993. The next prime is 121221321212113. The reversal of 121221321212002 is 200212123122121.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 7658502 + ... + 17352097.

It is an arithmetic number, because the mean of its divisors is an integer number (6244146396000).

Almost surely, 2^{121221321212002} is an apocalyptic number.

121221321212002 is a deficient number, since it is larger than the sum of its proper divisors (78591363459998).

121221321212002 is a wasteful number, since it uses less digits than its factorization.

121221321212002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25012222.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 121221321212002 its reverse (200212123122121), we get a palindrome (321433444334123).

The spelling of 121221321212002 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, three hundred twenty-one million, two hundred twelve thousand, two".