101012212222121 has 4 divisors (see below), whose sum is σ = 101012240671632. Its totient is φ = 101012183772612.

The previous prime is 101012212222067. The next prime is 101012212222133. The reversal of 101012212222121 is 121222212210101.

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 101012212222121 - 2⁶ = 101012212222057 is a prime.

It is a super-2 number, since 2×101012212222121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101012212222093 and 101012212222102.

It is not an unprimeable number, because it can be changed into a prime (101012212222151) 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, 7987151 + ... + 16303956.

It is an arithmetic number, because the mean of its divisors is an integer number (25253060167908).

Almost surely, 2^{101012212222121} is an apocalyptic number.

It is an amenable number.

101012212222121 is a deficient number, since it is larger than the sum of its proper divisors (28449511).

101012212222121 is an equidigital number, since it uses as much as digits as its factorization.

101012212222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28449510.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 101012212222121 its reverse (121222212210101), we get a palindrome (222234424432222).

The spelling of 101012212222121 in words is "one hundred one trillion, twelve billion, two hundred twelve million, two hundred twenty-two thousand, one hundred twenty-one".