21101402141200 has 120 divisors (see below), whose sum is σ = 50896261354400. Its totient is φ = 8407296737280.

The previous prime is 21101402141089. The next prime is 21101402141201. The reversal of 21101402141200 is 214120410112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21101402141201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116489899 + ... + 116670901.

Almost surely, 2^{21101402141200} is an apocalyptic number.

21101402141200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21101402141200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25448130677200).

21101402141200 is an abundant number, since it is smaller than the sum of its proper divisors (29794859213200).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21101402141200 is a wasteful number, since it uses less digits than its factorization.

21101402141200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182169 (or 182158 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21101402141200 its reverse (214120410112), we get a palindrome (21315522551312).

The spelling of 21101402141200 in words is "twenty-one trillion, one hundred one billion, four hundred two million, one hundred forty-one thousand, two hundred".