211201201210122 has 40 divisors (see below), whose sum is σ = 473314199275236. Its totient is φ = 70390424055168.

The previous prime is 211201201210121. The next prime is 211201201210177. The reversal of 211201201210122 is 221012102102112.

211201201210122 is a `hidden beast` number, since 211 + 2 + 0 + 120 + 1 + 210 + 122 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 170229923633961 + 40971277576161 = 13047219^2 + 6400881^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 211201201210095 and 211201201210104.

It is not an unprimeable number, because it can be changed into a prime (211201201210121) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 91226833 + ... + 93513300.

Almost surely, 2^{211201201210122} is an apocalyptic number.

211201201210122 is an abundant number, since it is smaller than the sum of its proper divisors (262112998065114).

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

211201201210122 is a wasteful number, since it uses less digits than its factorization.

211201201210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184747204 (or 184747195 counting only the distinct ones).

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

Adding to 211201201210122 its reverse (221012102102112), we get a palindrome (432213303312234).

The spelling of 211201201210122 in words is "two hundred eleven trillion, two hundred one billion, two hundred one million, two hundred ten thousand, one hundred twenty-two".