211201021022122 has 4 divisors (see below), whose sum is σ = 316801531533186. Its totient is φ = 105600510511060.

The previous prime is 211201021022077. The next prime is 211201021022153. The reversal of 211201021022122 is 221220120102112.

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., 185196742907401 + 26004278114721 = 13608701^2 + 5099439^2 .

It is a super-2 number, since 2×211201021022122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 211201021022122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52800255255529 + ... + 52800255255532.

Almost surely, 2^{211201021022122} is an apocalyptic number.

211201021022122 is a deficient number, since it is larger than the sum of its proper divisors (105600510511064).

211201021022122 is a wasteful number, since it uses less digits than its factorization.

211201021022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105600510511063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211201021022122 its reverse (221220120102112), we get a palindrome (432421141124234).

The spelling of 211201021022122 in words is "two hundred eleven trillion, two hundred one billion, twenty-one million, twenty-two thousand, one hundred twenty-two".