121000121120004 has 24 divisors (see below), whose sum is σ = 322666989653568. Its totient is φ = 34571463177120.

The previous prime is 121000121120003. The next prime is 121000121120009. The reversal of 121000121120004 is 400021121000121.

It is a super-2 number, since 2×121000121120004² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121000121120003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 720238816107 + ... + 720238816274.

It is an arithmetic number, because the mean of its divisors is an integer number (13444457902232).

Almost surely, 2^{121000121120004} is an apocalyptic number.

121000121120004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121000121120004 is an abundant number, since it is smaller than the sum of its proper divisors (201666868533564).

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

121000121120004 is a wasteful number, since it uses less digits than its factorization.

121000121120004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440477632395 (or 1440477632393 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121000121120004 its reverse (400021121000121), we get a palindrome (521021242120125).

The spelling of 121000121120004 in words is "one hundred twenty-one trillion, one hundred twenty-one million, one hundred twenty thousand, four".