121102121012 has 6 divisors (see below), whose sum is σ = 211928711778. Its totient is φ = 60551060504.

The previous prime is 121102120999. The next prime is 121102121033. The reversal of 121102121012 is 210121201121.

It can be written as a sum of positive squares in only one way, i.e., 119457331876 + 1644789136 = 345626^2 + 40556^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15137765123 + ... + 15137765130.

It is an arithmetic number, because the mean of its divisors is an integer number (35321451963).

Almost surely, 2^121102121012 is an apocalyptic number.

It is an amenable number.

121102121012 is a deficient number, since it is larger than the sum of its proper divisors (90826590766).

121102121012 is a wasteful number, since it uses less digits than its factorization.

121102121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30275530257 (or 30275530255 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121102121012 its reverse (210121201121), we get a palindrome (331223322133).

The spelling of 121102121012 in words is "one hundred twenty-one billion, one hundred two million, one hundred twenty-one thousand, twelve".