21101201001011 has 8 divisors (see below), whose sum is σ = 22217861054400. Its totient is φ = 19985148000360.

The previous prime is 21101201000993. The next prime is 21101201001017. The reversal of 21101201001011 is 11010010210112.

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

It is a cyclic number.

It is not a de Polignac number, because 21101201001011 - 2¹⁸ = 21101200738867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21101201000983 and 21101201001001.

It is not an unprimeable number, because it can be changed into a prime (21101201001017) 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, 151691825 + ... + 151830866.

It is an arithmetic number, because the mean of its divisors is an integer number (2777232631800).

Almost surely, 2^{21101201001011} is an apocalyptic number.

21101201001011 is a deficient number, since it is larger than the sum of its proper divisors (1116660053389).

21101201001011 is a wasteful number, since it uses less digits than its factorization.

21101201001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303526369.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 21101201001011 its reverse (11010010210112), we get a palindrome (32111211211123).

The spelling of 21101201001011 in words is "twenty-one trillion, one hundred one billion, two hundred one million, one thousand, eleven".