103010111921 has 2 divisors, whose sum is σ = 103010111922. Its totient is φ = 103010111920.

The previous prime is 103010111881. The next prime is 103010111927. The reversal of 103010111921 is 129111010301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 99568647025 + 3441464896 = 315545^2 + 58664^2 .

It is a cyclic number.

It is not a de Polignac number, because 103010111921 - 2¹⁸ = 103009849777 is a prime.

It is a super-2 number, since 2×103010111921² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 103010111893 and 103010111902.

It is not a weakly prime, because it can be changed into another prime (103010111927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51505055960 + 51505055961.

It is an arithmetic number, because the mean of its divisors is an integer number (51505055961).

Almost surely, 2^103010111921 is an apocalyptic number.

It is an amenable number.

103010111921 is a deficient number, since it is larger than the sum of its proper divisors (1).

103010111921 is an equidigital number, since it uses as much as digits as its factorization.

103010111921 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 20.

The spelling of 103010111921 in words is "one hundred three billion, ten million, one hundred eleven thousand, nine hundred twenty-one".