121100100222112 has 48 divisors (see below), whose sum is σ = 260192266733952. Its totient is φ = 55023853803520.

The previous prime is 121100100222103. The next prime is 121100100222121. The reversal of 121100100222112 is 211222001001121.

It is an interprime number because it is at equal distance from previous prime (121100100222103) and next prime (121100100222121).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66748273 + ... + 68538544.

It is an arithmetic number, because the mean of its divisors is an integer number (5420672223624).

Almost surely, 2^{121100100222112} is an apocalyptic number.

It is an amenable number.

121100100222112 is an abundant number, since it is smaller than the sum of its proper divisors (139092166511840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121100100222112 is a wasteful number, since it uses less digits than its factorization.

121100100222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135289381 (or 135289373 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121100100222112 its reverse (211222001001121), we get a palindrome (332322101223233).

The spelling of 121100100222112 in words is "one hundred twenty-one trillion, one hundred billion, one hundred million, two hundred twenty-two thousand, one hundred twelve".