51500211212001 has 32 divisors (see below), whose sum is σ = 70970345717760. Its totient is φ = 33184561492800.

The previous prime is 51500211211991. The next prime is 51500211212011. The reversal of 51500211212001 is 10021211200515.

It is an interprime number because it is at equal distance from previous prime (51500211211991) and next prime (51500211212011).

It is not a de Polignac number, because 51500211212001 - 2⁹ = 51500211211489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51500211212011) 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, 244932151 + ... + 245142323.

It is an arithmetic number, because the mean of its divisors is an integer number (2217823303680).

Almost surely, 2^{51500211212001} is an apocalyptic number.

It is an amenable number.

51500211212001 is a deficient number, since it is larger than the sum of its proper divisors (19470134505759).

51500211212001 is a wasteful number, since it uses less digits than its factorization.

51500211212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213477.

The product of its (nonzero) digits is 200, while the sum is 21.

Adding to 51500211212001 its reverse (10021211200515), we get a palindrome (61521422412516).

The spelling of 51500211212001 in words is "fifty-one trillion, five hundred billion, two hundred eleven million, two hundred twelve thousand, one".