21111012011201 has 8 divisors (see below), whose sum is σ = 25546098568320. Its totient is φ = 17030732378688.

The previous prime is 21111012011153. The next prime is 21111012011273. The reversal of 21111012011201 is 10211021011112.

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

It is not a de Polignac number, because 21111012011201 - 2³⁰ = 21109938269377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21111012011101) 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, 88701731021 + ... + 88701731258.

It is an arithmetic number, because the mean of its divisors is an integer number (3193262321040).

Almost surely, 2^{21111012011201} is an apocalyptic number.

It is an amenable number.

21111012011201 is a deficient number, since it is larger than the sum of its proper divisors (4435086557119).

21111012011201 is a wasteful number, since it uses less digits than its factorization.

21111012011201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177403462303.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 21111012011201 its reverse (10211021011112), we get a palindrome (31322033022313).

The spelling of 21111012011201 in words is "twenty-one trillion, one hundred eleven billion, twelve million, eleven thousand, two hundred one".