101212201021011 has 4 divisors (see below), whose sum is σ = 134949601361352. Its totient is φ = 67474800680672.

The previous prime is 101212201021003. The next prime is 101212201021039. The reversal of 101212201021011 is 110120102212101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101212201021011 - 2³ = 101212201021003 is a prime.

It is a super-2 number, since 2×101212201021011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (101212201001011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16868700170166 + ... + 16868700170171.

It is an arithmetic number, because the mean of its divisors is an integer number (33737400340338).

Almost surely, 2^{101212201021011} is an apocalyptic number.

101212201021011 is a deficient number, since it is larger than the sum of its proper divisors (33737400340341).

101212201021011 is an equidigital number, since it uses as much as digits as its factorization.

101212201021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33737400340340.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 101212201021011 its reverse (110120102212101), we get a palindrome (211332303233112).

The spelling of 101212201021011 in words is "one hundred one trillion, two hundred twelve billion, two hundred one million, twenty-one thousand, eleven".