121011010021211 has 4 divisors (see below), whose sum is σ = 123825219556632. Its totient is φ = 118196800485792.

The previous prime is 121011010021201. The next prime is 121011010021217. The reversal of 121011010021211 is 112120010110121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121011010021211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011010021217) 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, 1407104767646 + ... + 1407104767731.

It is an arithmetic number, because the mean of its divisors is an integer number (30956304889158).

Almost surely, 2^{121011010021211} is an apocalyptic number.

121011010021211 is a deficient number, since it is larger than the sum of its proper divisors (2814209535421).

121011010021211 is an equidigital number, since it uses as much as digits as its factorization.

121011010021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814209535420.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121011010021211 its reverse (112120010110121), we get a palindrome (233131020131332).

The spelling of 121011010021211 in words is "one hundred twenty-one trillion, eleven billion, ten million, twenty-one thousand, two hundred eleven".