121427703673 has 16 divisors (see below), whose sum is σ = 128490481936. Its totient is φ = 114616995840.

The previous prime is 121427703629. The next prime is 121427703689. The reversal of 121427703673 is 376307724121.

It can be written as a sum of positive squares in 8 ways, for example, as 599858064 + 120827845609 = 24492^2 + 347603^2 .

It is a cyclic number.

It is not a de Polignac number, because 121427703673 - 2⁹ = 121427703161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121427763673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203736 + ... + 533257.

It is an arithmetic number, because the mean of its divisors is an integer number (8030655121).

Almost surely, 2^121427703673 is an apocalyptic number.

It is an amenable number.

121427703673 is a deficient number, since it is larger than the sum of its proper divisors (7062778263).

121427703673 is an equidigital number, since it uses as much as digits as its factorization.

121427703673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737164.

The product of its (nonzero) digits is 296352, while the sum is 43.

The spelling of 121427703673 in words is "one hundred twenty-one billion, four hundred twenty-seven million, seven hundred three thousand, six hundred seventy-three".