101202212121 has 16 divisors (see below), whose sum is σ = 136362342144. Its totient is φ = 66758760144.

The previous prime is 101202212119. The next prime is 101202212171. The reversal of 101202212121 is 121212202101.

It is not a de Polignac number, because 101202212121 - 2¹ = 101202212119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101202212121.

It is not an unprimeable number, because it can be changed into a prime (101202212171) 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, 344851 + ... + 566856.

It is an arithmetic number, because the mean of its divisors is an integer number (8522646384).

Almost surely, 2^101202212121 is an apocalyptic number.

It is an amenable number.

101202212121 is a deficient number, since it is larger than the sum of its proper divisors (35160130023).

101202212121 is a wasteful number, since it uses less digits than its factorization.

101202212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 912100.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101202212121 its reverse (121212202101), we get a palindrome (222414414222).

The spelling of 101202212121 in words is "one hundred one billion, two hundred two million, two hundred twelve thousand, one hundred twenty-one".