111010012621 has 2 divisors, whose sum is σ = 111010012622. Its totient is φ = 111010012620.

The previous prime is 111010012613. The next prime is 111010012651. The reversal of 111010012621 is 126210010111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87031490121 + 23978522500 = 295011^2 + 154850^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010012621 - 2³ = 111010012613 is a prime.

It is a super-2 number, since 2×111010012621² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111010012595 and 111010012604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111010012651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505006310 + 55505006311.

It is an arithmetic number, because the mean of its divisors is an integer number (55505006311).

Almost surely, 2^111010012621 is an apocalyptic number.

It is an amenable number.

111010012621 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010012621 is an equidigital number, since it uses as much as digits as its factorization.

111010012621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 111010012621 its reverse (126210010111), we get a palindrome (237220022732).

The spelling of 111010012621 in words is "one hundred eleven billion, ten million, twelve thousand, six hundred twenty-one".