121425164220 has 48 divisors (see below), whose sum is σ = 340999390368. Its totient is φ = 32283955200.

The previous prime is 121425164219. The next prime is 121425164269. The reversal of 121425164220 is 22461524121.

It is a super-3 number, since 3×121425164220³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2982381 + ... + 3022820.

It is an arithmetic number, because the mean of its divisors is an integer number (7104153966).

Almost surely, 2^121425164220 is an apocalyptic number.

121425164220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121425164220 is an abundant number, since it is smaller than the sum of its proper divisors (219574226148).

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

121425164220 is a wasteful number, since it uses less digits than its factorization.

121425164220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005550 (or 6005548 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 121425164220 its reverse (22461524121), we get a palindrome (143886688341).

The spelling of 121425164220 in words is "one hundred twenty-one billion, four hundred twenty-five million, one hundred sixty-four thousand, two hundred twenty".