10201212110021 has 4 divisors (see below), whose sum is σ = 10201779776544. Its totient is φ = 10200644443500.

The previous prime is 10201212109993. The next prime is 10201212110027. The reversal of 10201212110021 is 12001121210201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10201212110021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10201212109978 and 10201212110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201212110027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 283806305 + ... + 283842246.

It is an arithmetic number, because the mean of its divisors is an integer number (2550444944136).

Almost surely, 2^{10201212110021} is an apocalyptic number.

It is an amenable number.

10201212110021 is a deficient number, since it is larger than the sum of its proper divisors (567666523).

10201212110021 is an equidigital number, since it uses as much as digits as its factorization.

10201212110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567666522.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10201212110021 its reverse (12001121210201), we get a palindrome (22202333320222).

The spelling of 10201212110021 in words is "ten trillion, two hundred one billion, two hundred twelve million, one hundred ten thousand, twenty-one".