31212122200201 has 8 divisors (see below), whose sum is σ = 32336379119880. Its totient is φ = 30091063736832.

The previous prime is 31212122200177. The next prime is 31212122200321. The reversal of 31212122200201 is 10200222121213.

It can be written as a sum of positive squares in 4 ways, for example, as 3511216382976 + 27700905817225 = 1873824^2 + 5263165^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31212122200201 - 2⁷ = 31212122200073 is a prime.

It is a super-5 number, since 5×31212122200201⁵ (a number of 69 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31212122600201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799594210 + ... + 799633243.

It is an arithmetic number, because the mean of its divisors is an integer number (4042047389985).

Almost surely, 2^{31212122200201} is an apocalyptic number.

It is an amenable number.

31212122200201 is a deficient number, since it is larger than the sum of its proper divisors (1124256919679).

31212122200201 is a wasteful number, since it uses less digits than its factorization.

31212122200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599228155.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 31212122200201 its reverse (10200222121213), we get a palindrome (41412344321414).

The spelling of 31212122200201 in words is "thirty-one trillion, two hundred twelve billion, one hundred twenty-two million, two hundred thousand, two hundred one".