101221110021201 has 4 divisors (see below), whose sum is σ = 134961480028272. Its totient is φ = 67480740014132.

The previous prime is 101221110021197. The next prime is 101221110021223. The reversal of 101221110021201 is 102120011122101.

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 101221110021201 - 2² = 101221110021197 is a prime.

It is a super-2 number, since 2×101221110021201² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101221110025201) 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, 16870185003531 + ... + 16870185003536.

It is an arithmetic number, because the mean of its divisors is an integer number (33740370007068).

Almost surely, 2^{101221110021201} is an apocalyptic number.

It is an amenable number.

101221110021201 is a deficient number, since it is larger than the sum of its proper divisors (33740370007071).

101221110021201 is an equidigital number, since it uses as much as digits as its factorization.

101221110021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33740370007070.

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

Adding to 101221110021201 its reverse (102120011122101), we get a palindrome (203341121143302).

The spelling of 101221110021201 in words is "one hundred one trillion, two hundred twenty-one billion, one hundred ten million, twenty-one thousand, two hundred one".