21401200101 has 8 divisors (see below), whose sum is σ = 29142059904. Its totient is φ = 13963903520.

The previous prime is 21401200087. The next prime is 21401200141. The reversal of 21401200101 is 10100210412.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 21401200101 - 2⁷ = 21401199973 is a prime.

It is a super-2 number, since 2×21401200101² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21401200141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75890640 + ... + 75890921.

It is an arithmetic number, because the mean of its divisors is an integer number (3642757488).

Almost surely, 2^21401200101 is an apocalyptic number.

It is an amenable number.

21401200101 is a deficient number, since it is larger than the sum of its proper divisors (7740859803).

21401200101 is a wasteful number, since it uses less digits than its factorization.

21401200101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151781611.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21401200101 its reverse (10100210412), we get a palindrome (31501410513).

The spelling of 21401200101 in words is "twenty-one billion, four hundred one million, two hundred thousand, one hundred one".