211222111021002 has 48 divisors (see below), whose sum is σ = 472209976149120. Its totient is φ = 69985768821336.

The previous prime is 211222111021001. The next prime is 211222111021007. The reversal of 211222111021002 is 200120111222112.

211222111021002 is a `hidden beast` number, since 211 + 22 + 211 + 10 + 210 + 0 + 2 = 666.

It is a super-2 number, since 2×211222111021002² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (211222111021001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68620578 + ... + 71632589.

It is an arithmetic number, because the mean of its divisors is an integer number (9837707836440).

Almost surely, 2^{211222111021002} is an apocalyptic number.

211222111021002 is an abundant number, since it is smaller than the sum of its proper divisors (260987865128118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211222111021002 is a wasteful number, since it uses less digits than its factorization.

211222111021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140253512 (or 140253339 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211222111021002 its reverse (200120111222112), we get a palindrome (411342222243114).

The spelling of 211222111021002 in words is "two hundred eleven trillion, two hundred twenty-two billion, one hundred eleven million, twenty-one thousand, two".