121403153313211 has 24 divisors (see below), whose sum is σ = 154120614188976. Its totient is φ = 94564254597120.

The previous prime is 121403153313193. The next prime is 121403153313259. The reversal of 121403153313211 is 112313351304121.

It is a happy number.

It is not a de Polignac number, because 121403153313211 - 2⁵ = 121403153313179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121403153313811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40953606 + ... + 43817851.

It is an arithmetic number, because the mean of its divisors is an integer number (6421692257874).

Almost surely, 2^{121403153313211} is an apocalyptic number.

121403153313211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121403153313211 is a deficient number, since it is larger than the sum of its proper divisors (32717460875765).

121403153313211 is a wasteful number, since it uses less digits than its factorization.

121403153313211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84774139 (or 84774132 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 121403153313211 in words is "one hundred twenty-one trillion, four hundred three billion, one hundred fifty-three million, three hundred thirteen thousand, two hundred eleven".