121421131434 has 48 divisors (see below), whose sum is σ = 276109902432. Its totient is φ = 39986062128.

The previous prime is 121421131399. The next prime is 121421131453. The reversal of 121421131434 is 434131124121.

It is a happy number.

121421131434 is a `hidden beast` number, since 1 + 2 + 14 + 211 + 3 + 1 + 434 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 121421131398 and 121421131407.

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, 1464709 + ... + 1545384.

It is an arithmetic number, because the mean of its divisors is an integer number (5752289634).

Almost surely, 2^121421131434 is an apocalyptic number.

121421131434 is an abundant number, since it is smaller than the sum of its proper divisors (154688770998).

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

121421131434 is an equidigital number, since it uses as much as digits as its factorization.

121421131434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010193 (or 3010181 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 121421131434 its reverse (434131124121), we get a palindrome (555552255555).

The spelling of 121421131434 in words is "one hundred twenty-one billion, four hundred twenty-one million, one hundred thirty-one thousand, four hundred thirty-four".