121221022001012 has 12 divisors (see below), whose sum is σ = 212290399509636. Its totient is φ = 60566622141120.

The previous prime is 121221022000951. The next prime is 121221022001021. The reversal of 121221022001012 is 210100220122121.

It can be written as a sum of positive squares in 2 ways, for example, as 20397814763236 + 100823207237776 = 4516394^2 + 10041076^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10972208633 + ... + 10972219680.

It is an arithmetic number, because the mean of its divisors is an integer number (17690866625803).

Almost surely, 2^{121221022001012} is an apocalyptic number.

It is an amenable number.

121221022001012 is a deficient number, since it is larger than the sum of its proper divisors (91069377508624).

121221022001012 is a wasteful number, since it uses less digits than its factorization.

121221022001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21944429698 (or 21944429696 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121221022001012 its reverse (210100220122121), we get a palindrome (331321242123133).

The spelling of 121221022001012 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-two million, one thousand, twelve".