211222101021 has 8 divisors (see below), whose sum is σ = 289241075424. Its totient is φ = 137008930320.

The previous prime is 211222101019. The next prime is 211222101043. The reversal of 211222101021 is 120101222112.

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

It is not a de Polignac number, because 211222101021 - 2¹ = 211222101019 is a prime.

It is a super-2 number, since 2×211222101021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222171021) 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, 951450795 + ... + 951451016.

It is an arithmetic number, because the mean of its divisors is an integer number (36155134428).

Almost surely, 2^211222101021 is an apocalyptic number.

It is an amenable number.

211222101021 is a deficient number, since it is larger than the sum of its proper divisors (78018974403).

211222101021 is a wasteful number, since it uses less digits than its factorization.

211222101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1902901851.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211222101021 its reverse (120101222112), we get a palindrome (331323323133).

The spelling of 211222101021 in words is "two hundred eleven billion, two hundred twenty-two million, one hundred one thousand, twenty-one".