101121111121 has 4 divisors (see below), whose sum is σ = 103472764912. Its totient is φ = 98769457332.

The previous prime is 101121111107. The next prime is 101121111131. The reversal of 101121111121 is 121111121101.

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 not a de Polignac number, because 101121111121 - 2⁹ = 101121110609 is a prime.

It is a super-2 number, since 2×101121111121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101121111131) 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, 1175826831 + ... + 1175826916.

It is an arithmetic number, because the mean of its divisors is an integer number (25868191228).

Almost surely, 2^101121111121 is an apocalyptic number.

It is an amenable number.

101121111121 is a deficient number, since it is larger than the sum of its proper divisors (2351653791).

101121111121 is an equidigital number, since it uses as much as digits as its factorization.

101121111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351653790.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 101121111121 its reverse (121111121101), we get a palindrome (222232232222).

It can be divided in two parts, 101 and 121111121, that multiplied together give a palindrome (12232223221).

The spelling of 101121111121 in words is "one hundred one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".