2151622101 has 16 divisors (see below), whose sum is σ = 2994650496. Its totient is φ = 1371549696.

The previous prime is 2151622097. The next prime is 2151622129. The reversal of 2151622101 is 1012261512.

It is not a de Polignac number, because 2151622101 - 2² = 2151622097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151622171) 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, 319101 + ... + 325773.

It is an arithmetic number, because the mean of its divisors is an integer number (187165656).

Almost surely, 2^2151622101 is an apocalyptic number.

It is an amenable number.

2151622101 is a deficient number, since it is larger than the sum of its proper divisors (843028395).

2151622101 is a wasteful number, since it uses less digits than its factorization.

2151622101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11372.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 2151622101 is about 46385.5807444512. The cubic root of 2151622101 is about 1290.9873859852.

Adding to 2151622101 its reverse (1012261512), we get a palindrome (3163883613).

The spelling of 2151622101 in words is "two billion, one hundred fifty-one million, six hundred twenty-two thousand, one hundred one".