21403112042402 has 16 divisors (see below), whose sum is σ = 32109244382400. Its totient is φ = 10700030719728.

The previous prime is 21403112042383. The next prime is 21403112042443. The reversal of 21403112042402 is 20424021130412.

It is a super-2 number, since 2×21403112042402² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 691545224 + ... + 691576172.

It is an arithmetic number, because the mean of its divisors is an integer number (2006827773900).

Almost surely, 2^{21403112042402} is an apocalyptic number.

21403112042402 is a deficient number, since it is larger than the sum of its proper divisors (10706132339998).

21403112042402 is a wasteful number, since it uses less digits than its factorization.

21403112042402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69065.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21403112042402 its reverse (20424021130412), we get a palindrome (41827133172814).

The spelling of 21403112042402 in words is "twenty-one trillion, four hundred three billion, one hundred twelve million, forty-two thousand, four hundred two".