101211220101201 has 32 divisors (see below), whose sum is σ = 160947775457280. Its totient is φ = 55315039067904.

The previous prime is 101211220101179. The next prime is 101211220101307. The reversal of 101211220101201 is 102101022112101.

It is a happy number.

It is not a de Polignac number, because 101211220101201 - 2⁹ = 101211220100689 is a prime.

It is a super-2 number, since 2×101211220101201² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101211220100201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5213475 + ... + 15152648.

It is an arithmetic number, because the mean of its divisors is an integer number (5029617983040).

Almost surely, 2^{101211220101201} is an apocalyptic number.

It is an amenable number.

101211220101201 is a deficient number, since it is larger than the sum of its proper divisors (59736555356079).

101211220101201 is a wasteful number, since it uses less digits than its factorization.

101211220101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20376445.

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

Adding to 101211220101201 its reverse (102101022112101), we get a palindrome (203312242213302).

The spelling of 101211220101201 in words is "one hundred one trillion, two hundred eleven billion, two hundred twenty million, one hundred one thousand, two hundred one".