101212211020001 has 4 divisors (see below), whose sum is σ = 104702287262100. Its totient is φ = 97722134777904.

The previous prime is 101212211019991. The next prime is 101212211020087. The reversal of 101212211020001 is 100020112212101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28929499318225 + 72282711701776 = 5378615^2 + 8501924^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101212211020001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101212211025001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1745038121006 + ... + 1745038121063.

It is an arithmetic number, because the mean of its divisors is an integer number (26175571815525).

Almost surely, 2^{101212211020001} is an apocalyptic number.

It is an amenable number.

101212211020001 is a deficient number, since it is larger than the sum of its proper divisors (3490076242099).

101212211020001 is an equidigital number, since it uses as much as digits as its factorization.

101212211020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490076242098.

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

Adding to 101212211020001 its reverse (100020112212101), we get a palindrome (201232323232102).

The spelling of 101212211020001 in words is "one hundred one trillion, two hundred twelve billion, two hundred eleven million, twenty thousand, one".