121315201144051 has 4 divisors (see below), whose sum is σ = 127700211730600. Its totient is φ = 114930190557504.

The previous prime is 121315201144037. The next prime is 121315201144063. The reversal of 121315201144051 is 150441102513121.

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 121315201144051 - 2¹⁵ = 121315201111283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121315201144451) 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, 3192505293246 + ... + 3192505293283.

It is an arithmetic number, because the mean of its divisors is an integer number (31925052932650).

Almost surely, 2^{121315201144051} is an apocalyptic number.

121315201144051 is a deficient number, since it is larger than the sum of its proper divisors (6385010586549).

121315201144051 is an equidigital number, since it uses as much as digits as its factorization.

121315201144051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6385010586548.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 121315201144051 its reverse (150441102513121), we get a palindrome (271756303657172).

The spelling of 121315201144051 in words is "one hundred twenty-one trillion, three hundred fifteen billion, two hundred one million, one hundred forty-four thousand, fifty-one".