101212212057 has 24 divisors (see below), whose sum is σ = 153896856288. Its totient is φ = 58673736000.

The previous prime is 101212212043. The next prime is 101212212121. The reversal of 101212212057 is 750212212101.

It is a happy number.

It is not a de Polignac number, because 101212212057 - 2⁴ = 101212212041 is a prime.

It is a super-2 number, since 2×101212212057² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101212212757) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2881444 + ... + 2916357.

It is an arithmetic number, because the mean of its divisors is an integer number (6412369012).

Almost surely, 2^101212212057 is an apocalyptic number.

It is an amenable number.

101212212057 is a deficient number, since it is larger than the sum of its proper divisors (52684644231).

101212212057 is a wasteful number, since it uses less digits than its factorization.

101212212057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5797861 (or 5797838 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

Adding to 101212212057 its reverse (750212212101), we get a palindrome (851424424158).

The spelling of 101212212057 in words is "one hundred one billion, two hundred twelve million, two hundred twelve thousand, fifty-seven".