211012221222021 has 8 divisors (see below), whose sum is σ = 281368829175520. Its totient is φ = 140665213708272.

The previous prime is 211012221222007. The next prime is 211012221222091. The reversal of 211012221222021 is 120222122210112.

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

It is not a de Polignac number, because 211012221222021 - 2¹¹ = 211012221219973 is a prime.

It is a super-2 number, since 2×211012221222021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211012221222091) 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, 2400058651 + ... + 2400146568.

It is an arithmetic number, because the mean of its divisors is an integer number (35171103646940).

Almost surely, 2^{211012221222021} is an apocalyptic number.

It is an amenable number.

211012221222021 is a deficient number, since it is larger than the sum of its proper divisors (70356607953499).

211012221222021 is a wasteful number, since it uses less digits than its factorization.

211012221222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800219875.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211012221222021 its reverse (120222122210112), we get a palindrome (331234343432133).

The spelling of 211012221222021 in words is "two hundred eleven trillion, twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, twenty-one".