101012221210121 has 4 divisors (see below), whose sum is σ = 108782392072452. Its totient is φ = 93242050347792.

The previous prime is 101012221210067. The next prime is 101012221210133. The reversal of 101012221210121 is 121012122210101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13895478896896 + 87116742313225 = 3727664^2 + 9333635^2 .

It is a cyclic number.

It is not a de Polignac number, because 101012221210121 - 2⁶ = 101012221210057 is a prime.

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 101012221210121.

It is not an unprimeable number, because it can be changed into a prime (101012221216121) 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, 3885085431146 + ... + 3885085431171.

It is an arithmetic number, because the mean of its divisors is an integer number (27195598018113).

Almost surely, 2^{101012221210121} is an apocalyptic number.

It is an amenable number.

101012221210121 is a deficient number, since it is larger than the sum of its proper divisors (7770170862331).

101012221210121 is an equidigital number, since it uses as much as digits as its factorization.

101012221210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770170862330.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101012221210121 its reverse (121012122210101), we get a palindrome (222024343420222).

The spelling of 101012221210121 in words is "one hundred one trillion, twelve billion, two hundred twenty-one million, two hundred ten thousand, one hundred twenty-one".