121942888110 has 48 divisors (see below), whose sum is σ = 317498856480. Its totient is φ = 32472221760.

The previous prime is 121942888091. The next prime is 121942888129. The reversal of 121942888110 is 11888249121.

It is a happy number.

121942888110 is a `hidden beast` number, since 1 + 219 + 428 + 8 + 8 + 1 + 1 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (121942888091) and next prime (121942888129).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 891706 + ... + 1019325.

It is an arithmetic number, because the mean of its divisors is an integer number (6614559510).

Almost surely, 2^121942888110 is an apocalyptic number.

121942888110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121942888110 is an abundant number, since it is smaller than the sum of its proper divisors (195555968370).

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

121942888110 is a wasteful number, since it uses less digits than its factorization.

121942888110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1911753 (or 1911750 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 45.

The spelling of 121942888110 in words is "one hundred twenty-one billion, nine hundred forty-two million, eight hundred eighty-eight thousand, one hundred ten".