101221111121201 has 4 divisors (see below), whose sum is σ = 101221458365952. Its totient is φ = 101220763876452.

The previous prime is 101221111121197. The next prime is 101221111121257. The reversal of 101221111121201 is 102121111122101.

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 101221111121201 - 2² = 101221111121197 is a prime.

It is a super-2 number, since 2×101221111121201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101221111121201.

It is not an unprimeable number, because it can be changed into a prime (101221111321201) 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, 173184761 + ... + 173768246.

It is an arithmetic number, because the mean of its divisors is an integer number (25305364591488).

Almost surely, 2^{101221111121201} is an apocalyptic number.

It is an amenable number.

101221111121201 is a deficient number, since it is larger than the sum of its proper divisors (347244751).

101221111121201 is an equidigital number, since it uses as much as digits as its factorization.

101221111121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347244750.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 101221111121201 its reverse (102121111122101), we get a palindrome (203342222243302).

The spelling of 101221111121201 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred eleven million, one hundred twenty-one thousand, two hundred one".