101213111421 has 6 divisors (see below), whose sum is σ = 146196716510. Its totient is φ = 67475407608.

The previous prime is 101213111407. The next prime is 101213111431. The reversal of 101213111421 is 124111312101.

101213111421 is a `hidden beast` number, since 10 + 121 + 3 + 111 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 86679603396 + 14533508025 = 294414^2 + 120555^2 .

It is not a de Polignac number, because 101213111421 - 2²¹ = 101211014269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101213111394 and 101213111403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101213111431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5622950626 + ... + 5622950643.

Almost surely, 2^101213111421 is an apocalyptic number.

It is an amenable number.

101213111421 is a deficient number, since it is larger than the sum of its proper divisors (44983605089).

101213111421 is a wasteful number, since it uses less digits than its factorization.

101213111421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11245901275 (or 11245901272 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 101213111421 its reverse (124111312101), we get a palindrome (225324423522).

The spelling of 101213111421 in words is "one hundred one billion, two hundred thirteen million, one hundred eleven thousand, four hundred twenty-one".