21101001011002 has 8 divisors (see below), whose sum is σ = 34528910745312. Its totient is φ = 9591364095900.

The previous prime is 21101001010967. The next prime is 21101001011017. The reversal of 21101001011002 is 20011010010112.

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

It is a super-2 number, since 2×21101001011002² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21101001011002.

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, 479568204774 + ... + 479568204817.

It is an arithmetic number, because the mean of its divisors is an integer number (4316113843164).

Almost surely, 2^{21101001011002} is an apocalyptic number.

21101001011002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101001011002 is a deficient number, since it is larger than the sum of its proper divisors (13427909734310).

21101001011002 is a wasteful number, since it uses less digits than its factorization.

21101001011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 959136409604.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21101001011002 its reverse (20011010010112), we get a palindrome (41112011021114).

The spelling of 21101001011002 in words is "twenty-one trillion, one hundred one billion, one million, eleven thousand, two".