21451100114 has 16 divisors (see below), whose sum is σ = 33121749528. Its totient is φ = 10414689792.

The previous prime is 21451100093. The next prime is 21451100147. The reversal of 21451100114 is 41100115412.

It can be written as a sum of positive squares in 4 ways, for example, as 14416084489 + 7035015625 = 120067^2 + 83875^2 .

It is a super-2 number, since 2×21451100114² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032857 + ... + 1053420.

Almost surely, 2^21451100114 is an apocalyptic number.

21451100114 is a deficient number, since it is larger than the sum of its proper divisors (11670649414).

21451100114 is a wasteful number, since it uses less digits than its factorization.

21451100114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086429.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 21451100114 its reverse (41100115412), we get a palindrome (62551215526).

The spelling of 21451100114 in words is "twenty-one billion, four hundred fifty-one million, one hundred thousand, one hundred fourteen".