121210021112311 has 4 divisors (see below), whose sum is σ = 121210554677112. Its totient is φ = 121209487547512.

The previous prime is 121210021112269. The next prime is 121210021112357. The reversal of 121210021112311 is 113211120012121.

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

It is a cyclic number.

It is not a de Polignac number, because 121210021112311 - 2¹³ = 121210021104119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210021112381) 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, 266441500 + ... + 266896033.

It is an arithmetic number, because the mean of its divisors is an integer number (30302638669278).

Almost surely, 2^{121210021112311} is an apocalyptic number.

121210021112311 is a deficient number, since it is larger than the sum of its proper divisors (533564801).

121210021112311 is an equidigital number, since it uses as much as digits as its factorization.

121210021112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533564800.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 121210021112311 its reverse (113211120012121), we get a palindrome (234421141124432).

The spelling of 121210021112311 in words is "one hundred twenty-one trillion, two hundred ten billion, twenty-one million, one hundred twelve thousand, three hundred eleven".