121221112022012 has 6 divisors (see below), whose sum is σ = 212136946038528. Its totient is φ = 60610556011004.

The previous prime is 121221112021979. The next prime is 121221112022027. The reversal of 121221112022012 is 210220211122121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15152639002748 + ... + 15152639002755.

It is an arithmetic number, because the mean of its divisors is an integer number (35356157673088).

Almost surely, 2^{121221112022012} is an apocalyptic number.

It is an amenable number.

121221112022012 is a deficient number, since it is larger than the sum of its proper divisors (90915834016516).

121221112022012 is a wasteful number, since it uses less digits than its factorization.

121221112022012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305278005507 (or 30305278005505 counting only the distinct ones).

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

Adding to 121221112022012 its reverse (210220211122121), we get a palindrome (331441323144133).

The spelling of 121221112022012 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, one hundred twelve million, twenty-two thousand, twelve".