211222221222002 has 4 divisors (see below), whose sum is σ = 316833331833006. Its totient is φ = 105611110611000.

The previous prime is 211222221221959. The next prime is 211222221222037. The reversal of 211222221222002 is 200222122222112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 160109316071761 + 51112905150241 = 12653431^2 + 7149329^2 .

It is a super-2 number, since 2×211222221222002² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52805555305499 + ... + 52805555305502.

Almost surely, 2^{211222221222002} is an apocalyptic number.

211222221222002 is a deficient number, since it is larger than the sum of its proper divisors (105611110611004).

211222221222002 is a wasteful number, since it uses less digits than its factorization.

211222221222002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105611110611003.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 211222221222002 its reverse (200222122222112), we get a palindrome (411444343444114).

The spelling of 211222221222002 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two".