101212311123021 has 32 divisors (see below), whose sum is σ = 154931031763200. Its totient is φ = 57572634737664.

The previous prime is 101212311122983. The next prime is 101212311123031. The reversal of 101212311123021 is 120321113212101.

It is not a de Polignac number, because 101212311123021 - 2⁶ = 101212311122957 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212311123031) 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, 7297950 + ... + 15990143.

It is an arithmetic number, because the mean of its divisors is an integer number (4841594742600).

Almost surely, 2^{101212311123021} is an apocalyptic number.

It is an amenable number.

101212311123021 is a deficient number, since it is larger than the sum of its proper divisors (53718720640179).

101212311123021 is a wasteful number, since it uses less digits than its factorization.

101212311123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23289045.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 101212311123021 its reverse (120321113212101), we get a palindrome (221533424335122).

The spelling of 101212311123021 in words is "one hundred one trillion, two hundred twelve billion, three hundred eleven million, one hundred twenty-three thousand, twenty-one".