2102251406 has 8 divisors (see below), whose sum is σ = 3159853680. Its totient is φ = 1048966848.

The previous prime is 2102251387. The next prime is 2102251427. The reversal of 2102251406 is 6041522012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1078211 + ... + 1080158.

It is an arithmetic number, because the mean of its divisors is an integer number (394981710).

Almost surely, 2^2102251406 is an apocalyptic number.

2102251406 is a deficient number, since it is larger than the sum of its proper divisors (1057602274).

2102251406 is a wasteful number, since it uses less digits than its factorization.

2102251406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158858.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 2102251406 is about 45850.3152224715. The cubic root of 2102251406 is about 1281.0366370360.

Adding to 2102251406 its reverse (6041522012), we get a palindrome (8143773418).

The spelling of 2102251406 in words is "two billion, one hundred two million, two hundred fifty-one thousand, four hundred six".