121101012211 has 16 divisors (see below), whose sum is σ = 123519674880. Its totient is φ = 118695157920.

The previous prime is 121101012181. The next prime is 121101012233. The reversal of 121101012211 is 112210101121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121101012211 - 2³¹ = 118953528563 is a prime.

It is a super-2 number, since 2×121101012211² (a number of 23 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 = 121101012191 and 121101012200.

It is not an unprimeable number, because it can be changed into a prime (121101012271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32491030 + ... + 32494756.

It is an arithmetic number, because the mean of its divisors is an integer number (7719979680).

Almost surely, 2^121101012211 is an apocalyptic number.

121101012211 is a deficient number, since it is larger than the sum of its proper divisors (2418662669).

121101012211 is an equidigital number, since it uses as much as digits as its factorization.

121101012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121101012211 its reverse (112210101121), we get a palindrome (233311113332).

It can be divided in two parts, 1211010 and 12211, that added together give a palindrome (1223221).

The spelling of 121101012211 in words is "one hundred twenty-one billion, one hundred one million, twelve thousand, two hundred eleven".