101211220021201 has 16 divisors (see below), whose sum is σ = 103052066515200. Its totient is φ = 99374566241808.

The previous prime is 101211220021141. The next prime is 101211220021357. The reversal of 101211220021201 is 102120022112101.

It is a cyclic number.

It is not a de Polignac number, because 101211220021201 - 2⁹ = 101211220020689 is a prime.

It is a super-2 number, since 2×101211220021201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101211220021501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1197397726 + ... + 1197482248.

It is an arithmetic number, because the mean of its divisors is an integer number (6440754157200).

Almost surely, 2^{101211220021201} is an apocalyptic number.

It is an amenable number.

101211220021201 is a deficient number, since it is larger than the sum of its proper divisors (1840846493999).

101211220021201 is an equidigital number, since it uses as much as digits as its factorization.

101211220021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109068.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101211220021201 its reverse (102120022112101), we get a palindrome (203331242133302).

The spelling of 101211220021201 in words is "one hundred one trillion, two hundred eleven billion, two hundred twenty million, twenty-one thousand, two hundred one".