211201001222001 has 32 divisors (see below), whose sum is σ = 338769454679040. Its totient is φ = 114334062249024.

The previous prime is 211201001221997. The next prime is 211201001222017. The reversal of 211201001222001 is 100222100102112.

It is not a de Polignac number, because 211201001222001 - 2² = 211201001221997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211201001222041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284692311 + ... + 285433203.

It is an arithmetic number, because the mean of its divisors is an integer number (10586545458720).

Almost surely, 2^{211201001222001} is an apocalyptic number.

211201001222001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211201001222001 is a deficient number, since it is larger than the sum of its proper divisors (127568453457039).

211201001222001 is a wasteful number, since it uses less digits than its factorization.

211201001222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455365.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211201001222001 its reverse (100222100102112), we get a palindrome (311423101324113).

The spelling of 211201001222001 in words is "two hundred eleven trillion, two hundred one billion, one million, two hundred twenty-two thousand, one".