921101131 has 2 divisors, whose sum is σ = 921101132. Its totient is φ = 921101130.

The previous prime is 921101119. The next prime is 921101143. The reversal of 921101131 is 131101129.

It is a balanced prime because it is at equal distance from previous prime (921101119) and next prime (921101143).

It is a cyclic number.

It is not a de Polignac number, because 921101131 - 2⁵ = 921101099 is a prime.

It is a super-2 number, since 2×921101131² = 1696854587058958322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 921101099 and 921101108.

It is not a weakly prime, because it can be changed into another prime (921104131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460550565 + 460550566.

It is an arithmetic number, because the mean of its divisors is an integer number (460550566).

Almost surely, 2^921101131 is an apocalyptic number.

921101131 is a deficient number, since it is larger than the sum of its proper divisors (1).

921101131 is an equidigital number, since it uses as much as digits as its factorization.

921101131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54, while the sum is 19.

The square root of 921101131 is about 30349.6479551246. The cubic root of 921101131 is about 972.9766960467.

The spelling of 921101131 in words is "nine hundred twenty-one million, one hundred one thousand, one hundred thirty-one".