101211220021101 has 4 divisors (see below), whose sum is σ = 134948293361472. Its totient is φ = 67474146680732.

The previous prime is 101211220021063. The next prime is 101211220021129. The reversal of 101211220021101 is 101120022112101.

It is a happy number.

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 not a de Polignac number, because 101211220021101 - 2³⁵ = 101176860282733 is a prime.

It is a super-2 number, since 2×101211220021101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211220021141) 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, 16868536670181 + ... + 16868536670186.

It is an arithmetic number, because the mean of its divisors is an integer number (33737073340368).

Almost surely, 2^{101211220021101} is an apocalyptic number.

It is an amenable number.

101211220021101 is a deficient number, since it is larger than the sum of its proper divisors (33737073340371).

101211220021101 is an equidigital number, since it uses as much as digits as its factorization.

101211220021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33737073340370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101211220021101 its reverse (101120022112101), we get a palindrome (202331242133202).

The spelling of 101211220021101 in words is "one hundred one trillion, two hundred eleven billion, two hundred twenty million, twenty-one thousand, one hundred one".