212401621201 has 32 divisors (see below), whose sum is σ = 266616649728. Its totient is φ = 164383914240.

The previous prime is 212401621199. The next prime is 212401621213. The reversal of 212401621201 is 102126104212.

It is not a de Polignac number, because 212401621201 - 2¹ = 212401621199 is a prime.

It is a super-2 number, since 2×212401621201² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212401621291) 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, 6809026 + ... + 6840148.

It is an arithmetic number, because the mean of its divisors is an integer number (8331770304).

Almost surely, 2^212401621201 is an apocalyptic number.

It is an amenable number.

212401621201 is a deficient number, since it is larger than the sum of its proper divisors (54215028527).

212401621201 is a wasteful number, since it uses less digits than its factorization.

212401621201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31741.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 212401621201 its reverse (102126104212), we get a palindrome (314527725413).

The spelling of 212401621201 in words is "two hundred twelve billion, four hundred one million, six hundred twenty-one thousand, two hundred one".