21403010021030 has 16 divisors (see below), whose sum is σ = 42027728768784. Its totient is φ = 7782912734880.

The previous prime is 21403010021023. The next prime is 21403010021033. The reversal of 21403010021030 is 3012001030412.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21403010021033) 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, 97286409077 + ... + 97286409296.

It is an arithmetic number, because the mean of its divisors is an integer number (2626733048049).

Almost surely, 2^{21403010021030} is an apocalyptic number.

21403010021030 is a deficient number, since it is larger than the sum of its proper divisors (20624718747754).

21403010021030 is a wasteful number, since it uses less digits than its factorization.

21403010021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194572818391.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21403010021030 its reverse (3012001030412), we get a palindrome (24415011051442).

The spelling of 21403010021030 in words is "twenty-one trillion, four hundred three billion, ten million, twenty-one thousand, thirty".