101012213123 has 2 divisors, whose sum is σ = 101012213124. Its totient is φ = 101012213122.

The previous prime is 101012213051. The next prime is 101012213129. The reversal of 101012213123 is 321312210101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101012213123 - 2¹² = 101012209027 is a prime.

It is not a weakly prime, because it can be changed into another prime (101012213129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50506106561 + 50506106562.

It is an arithmetic number, because the mean of its divisors is an integer number (50506106562).

Almost surely, 2^101012213123 is an apocalyptic number.

101012213123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101012213123 is an equidigital number, since it uses as much as digits as its factorization.

101012213123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101012213123 its reverse (321312210101), we get a palindrome (422324423224).

The spelling of 101012213123 in words is "one hundred one billion, twelve million, two hundred thirteen thousand, one hundred twenty-three".