121420140120 has 96 divisors (see below), whose sum is σ = 402061093200. Its totient is φ = 31767780096.

The previous prime is 121420140089. The next prime is 121420140131. The reversal of 121420140120 is 21041024121.

121420140120 is a `hidden beast` number, since 121 + 420 + 1 + 4 + 0 + 120 = 666.

It is a super-2 number, since 2×121420140120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121420140093 and 121420140102.

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, 3162790 + ... + 3200949.

Almost surely, 2^121420140120 is an apocalyptic number.

121420140120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121420140120 is an abundant number, since it is smaller than the sum of its proper divisors (280640953080).

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

121420140120 is a wasteful number, since it uses less digits than its factorization.

121420140120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6363809 (or 6363802 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121420140120 its reverse (21041024121), we get a palindrome (142461164241).

The spelling of 121420140120 in words is "one hundred twenty-one billion, four hundred twenty million, one hundred forty thousand, one hundred twenty".