21101110223402 has 8 divisors (see below), whose sum is σ = 34529089456512. Its totient is φ = 9591413737900.

The previous prime is 21101110223371. The next prime is 21101110223437. The reversal of 21101110223402 is 20432201110112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479570686874 + ... + 479570686917.

It is an arithmetic number, because the mean of its divisors is an integer number (4316136182064).

Almost surely, 2^{21101110223402} is an apocalyptic number.

21101110223402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101110223402 is a deficient number, since it is larger than the sum of its proper divisors (13427979233110).

21101110223402 is a wasteful number, since it uses less digits than its factorization.

21101110223402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959141373804.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21101110223402 its reverse (20432201110112), we get a palindrome (41533311333514).

The spelling of 21101110223402 in words is "twenty-one trillion, one hundred one billion, one hundred ten million, two hundred twenty-three thousand, four hundred two".