1600261222021 has 64 divisors (see below), whose sum is σ = 2118232166400. Its totient is φ = 1172690265600.

The previous prime is 1600261222013. The next prime is 1600261222031. The reversal of 1600261222021 is 1202221620061.

It is not a de Polignac number, because 1600261222021 - 2³ = 1600261222013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1600261222031) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13098265 + ... + 13219873.

It is an arithmetic number, because the mean of its divisors is an integer number (33097377600).

Almost surely, 2^{1600261222021} is an apocalyptic number.

1600261222021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1600261222021 is a deficient number, since it is larger than the sum of its proper divisors (517970944379).

1600261222021 is a wasteful number, since it uses less digits than its factorization.

1600261222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121810.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1600261222021 its reverse (1202221620061), we get a palindrome (2802482842082).

The spelling of 1600261222021 in words is "one trillion, six hundred billion, two hundred sixty-one million, two hundred twenty-two thousand, twenty-one".