121100012102 has 16 divisors (see below), whose sum is σ = 185033272320. Its totient is φ = 59425637448.

The previous prime is 121100012069. The next prime is 121100012113. The reversal of 121100012102 is 201210001121.

It is a super-2 number, since 2×121100012102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773738 + ... + 916989.

It is an arithmetic number, because the mean of its divisors is an integer number (11564579520).

Almost surely, 2^121100012102 is an apocalyptic number.

121100012102 is a deficient number, since it is larger than the sum of its proper divisors (63933260218).

121100012102 is a wasteful number, since it uses less digits than its factorization.

121100012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691395.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121100012102 its reverse (201210001121), we get a palindrome (322310013223).

The spelling of 121100012102 in words is "one hundred twenty-one billion, one hundred million, twelve thousand, one hundred two".