21422100030 has 32 divisors (see below), whose sum is σ = 51422541984. Its totient is φ = 5711504256.

The previous prime is 21422100023. The next prime is 21422100043. The reversal of 21422100030 is 3000122412.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 21422099982 and 21422100009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106432 + ... + 232748.

It is an arithmetic number, because the mean of its divisors is an integer number (1606954437).

Almost surely, 2^21422100030 is an apocalyptic number.

21422100030 is an abundant number, since it is smaller than the sum of its proper divisors (30000441954).

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

21422100030 is a wasteful number, since it uses less digits than its factorization.

21422100030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131980.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21422100030 its reverse (3000122412), we get a palindrome (24422222442).

The spelling of 21422100030 in words is "twenty-one billion, four hundred twenty-two million, one hundred thousand, thirty".