21401200102 has 8 divisors (see below), whose sum is σ = 32314395312. Its totient is φ = 10629735000.

The previous prime is 21401200087. The next prime is 21401200141. The reversal of 21401200102 is 20100210412.

It is a happy number.

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

It is a super-2 number, since 2×21401200102² (a number of 21 digits) contains 22 as substring.

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, 35432149 + ... + 35432752.

It is an arithmetic number, because the mean of its divisors is an integer number (4039299414).

Almost surely, 2^21401200102 is an apocalyptic number.

21401200102 is a deficient number, since it is larger than the sum of its proper divisors (10913195210).

21401200102 is a wasteful number, since it uses less digits than its factorization.

21401200102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70865054.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21401200102 its reverse (20100210412), we get a palindrome (41501410514).

The spelling of 21401200102 in words is "twenty-one billion, four hundred one million, two hundred thousand, one hundred two".