20121120983 has 2 divisors, whose sum is σ = 20121120984. Its totient is φ = 20121120982.

The previous prime is 20121120977. The next prime is 20121121057. The reversal of 20121120983 is 38902112102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20121120983 - 2⁸ = 20121120727 is a prime.

It is a super-2 number, since 2×20121120983² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20121120883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060560491 + 10060560492.

It is an arithmetic number, because the mean of its divisors is an integer number (10060560492).

Almost surely, 2^20121120983 is an apocalyptic number.

20121120983 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121120983 is an equidigital number, since it uses as much as digits as its factorization.

20121120983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 20121120983 in words is "twenty billion, one hundred twenty-one million, one hundred twenty thousand, nine hundred eighty-three".