21010102201031 has 2 divisors, whose sum is σ = 21010102201032. Its totient is φ = 21010102201030.

The previous prime is 21010102201019. The next prime is 21010102201043. The reversal of 21010102201031 is 13010220101012.

It is a balanced prime because it is at equal distance from previous prime (21010102201019) and next prime (21010102201043).

It is a cyclic number.

It is not a de Polignac number, because 21010102201031 - 2¹⁰ = 21010102200007 is a prime.

It is a super-2 number, since 2×21010102201031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010102200997 and 21010102201015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21010102201051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505051100515 + 10505051100516.

It is an arithmetic number, because the mean of its divisors is an integer number (10505051100516).

Almost surely, 2^{21010102201031} is an apocalyptic number.

21010102201031 is a deficient number, since it is larger than the sum of its proper divisors (1).

21010102201031 is an equidigital number, since it uses as much as digits as its factorization.

21010102201031 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 14.

Adding to 21010102201031 its reverse (13010220101012), we get a palindrome (34020322302043).

The spelling of 21010102201031 in words is "twenty-one trillion, ten billion, one hundred two million, two hundred one thousand, thirty-one".