211021101012021 has 8 divisors (see below), whose sum is σ = 282084762279840. Its totient is φ = 140319086876112.

The previous prime is 211021101012017. The next prime is 211021101012037. The reversal of 211021101012021 is 120210101120112.

It is a happy number.

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

It is not a de Polignac number, because 211021101012021 - 2² = 211021101012017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211021101012221) 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, 90411781615 + ... + 90411783948.

It is an arithmetic number, because the mean of its divisors is an integer number (35260595284980).

Almost surely, 2^{211021101012021} is an apocalyptic number.

It is an amenable number.

211021101012021 is a deficient number, since it is larger than the sum of its proper divisors (71063661267819).

211021101012021 is a wasteful number, since it uses less digits than its factorization.

211021101012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180823565955.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211021101012021 its reverse (120210101120112), we get a palindrome (331231202132133).

The spelling of 211021101012021 in words is "two hundred eleven trillion, twenty-one billion, one hundred one million, twelve thousand, twenty-one".