21442210040402 has 32 divisors (see below), whose sum is σ = 32791184899200. Its totient is φ = 10514412437760.

The previous prime is 21442210040369. The next prime is 21442210040453. The reversal of 21442210040402 is 20404001224412.

It is a happy 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, 6823253 + ... + 9457335.

It is an arithmetic number, because the mean of its divisors is an integer number (1024724528100).

Almost surely, 2^{21442210040402} is an apocalyptic number.

21442210040402 is a deficient number, since it is larger than the sum of its proper divisors (11348974858798).

21442210040402 is a wasteful number, since it uses less digits than its factorization.

21442210040402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634578.

The product of its (nonzero) digits is 4096, while the sum is 26.

Adding to 21442210040402 its reverse (20404001224412), we get a palindrome (41846211264814).

The spelling of 21442210040402 in words is "twenty-one trillion, four hundred forty-two billion, two hundred ten million, forty thousand, four hundred two".