2990121773381 has 2 divisors, whose sum is σ = 2990121773382. Its totient is φ = 2990121773380.

The previous prime is 2990121773369. The next prime is 2990121773399. The reversal of 2990121773381 is 1833771210992.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2987940416356 + 2181357025 = 1728566^2 + 46705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2990121773381 is a prime.

It is a super-2 number, since 2×2990121773381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2990121773281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495060886690 + 1495060886691.

It is an arithmetic number, because the mean of its divisors is an integer number (1495060886691).

Almost surely, 2^{2990121773381} is an apocalyptic number.

It is an amenable number.

2990121773381 is a deficient number, since it is larger than the sum of its proper divisors (1).

2990121773381 is an equidigital number, since it uses as much as digits as its factorization.

2990121773381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1143072, while the sum is 53.

The spelling of 2990121773381 in words is "two trillion, nine hundred ninety billion, one hundred twenty-one million, seven hundred seventy-three thousand, three hundred eighty-one".