211222100110021 has 48 divisors (see below), whose sum is σ = 293715393648768. Its totient is φ = 146689087507200.

The previous prime is 211222100110003. The next prime is 211222100110103. The reversal of 211222100110021 is 120011001222112.

It is not a de Polignac number, because 211222100110021 - 2²¹ = 211222098012869 is a prime.

It is a super-2 number, since 2×211222100110021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211222100109977 and 211222100110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211222100170021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 124610650 + ... + 126294331.

It is an arithmetic number, because the mean of its divisors is an integer number (6119070701016).

Almost surely, 2^{211222100110021} is an apocalyptic number.

It is an amenable number.

211222100110021 is a deficient number, since it is larger than the sum of its proper divisors (82493293538747).

211222100110021 is a wasteful number, since it uses less digits than its factorization.

211222100110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250905070 (or 250905041 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211222100110021 its reverse (120011001222112), we get a palindrome (331233101332133).

The spelling of 211222100110021 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred million, one hundred ten thousand, twenty-one".