211222010021 has 8 divisors (see below), whose sum is σ = 230503420224. Its totient is φ = 191953834720.

The previous prime is 211222009987. The next prime is 211222010029. The reversal of 211222010021 is 120010222112.

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 211222010021 - 2²⁶ = 211154901157 is a prime.

It is a super-2 number, since 2×211222010021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222009978 and 211222010005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222010029) 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, 3275336 + ... + 3339201.

It is an arithmetic number, because the mean of its divisors is an integer number (28812927528).

Almost surely, 2^211222010021 is an apocalyptic number.

It is an amenable number.

211222010021 is a deficient number, since it is larger than the sum of its proper divisors (19281410203).

211222010021 is a wasteful number, since it uses less digits than its factorization.

211222010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617451.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211222010021 its reverse (120010222112), we get a palindrome (331232232133).

The spelling of 211222010021 in words is "two hundred eleven billion, two hundred twenty-two million, ten thousand, twenty-one".