1361011221051 has 16 divisors (see below), whose sum is σ = 1915602522240. Its totient is φ = 857150933760.

The previous prime is 1361011221007. The next prime is 1361011221067. The reversal of 1361011221051 is 1501221101631.

It is not a de Polignac number, because 1361011221051 - 2¹⁴ = 1361011204667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1361011221001) 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, 33800545 + ... + 33840786.

It is an arithmetic number, because the mean of its divisors is an integer number (119725157640).

Almost surely, 2^{1361011221051} is an apocalyptic number.

1361011221051 is a deficient number, since it is larger than the sum of its proper divisors (554591301189).

1361011221051 is a wasteful number, since it uses less digits than its factorization.

1361011221051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67641706.

The product of its (nonzero) digits is 360, while the sum is 24.

Adding to 1361011221051 its reverse (1501221101631), we get a palindrome (2862232322682).

The spelling of 1361011221051 in words is "one trillion, three hundred sixty-one billion, eleven million, two hundred twenty-one thousand, fifty-one".