101212123331 has 16 divisors (see below), whose sum is σ = 112384585728. Its totient is φ = 90382572000.

The previous prime is 101212123289. The next prime is 101212123349. The reversal of 101212123331 is 133321212101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101212123331 - 2²² = 101207929027 is a prime.

It is a super-2 number, since 2×101212123331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101212123361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217565 + ... + 499758.

It is an arithmetic number, because the mean of its divisors is an integer number (7024036608).

Almost surely, 2^101212123331 is an apocalyptic number.

101212123331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101212123331 is a deficient number, since it is larger than the sum of its proper divisors (11172462397).

101212123331 is a wasteful number, since it uses less digits than its factorization.

101212123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717562.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 101212123331 its reverse (133321212101), we get a palindrome (234533335432).

The spelling of 101212123331 in words is "one hundred one billion, two hundred twelve million, one hundred twenty-three thousand, three hundred thirty-one".