1212212102101 has 32 divisors (see below), whose sum is σ = 1631147551488. Its totient is φ = 870012541440.

The previous prime is 1212212102093. The next prime is 1212212102159. The reversal of 1212212102101 is 1012012122121.

It is not a de Polignac number, because 1212212102101 - 2³ = 1212212102093 is a prime.

It is a super-2 number, since 2×1212212102101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212212102191) 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, 867490 + ... + 1782403.

It is an arithmetic number, because the mean of its divisors is an integer number (50973360984).

Almost surely, 2^{1212212102101} is an apocalyptic number.

1212212102101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212212102101 is a deficient number, since it is larger than the sum of its proper divisors (418935449387).

1212212102101 is a wasteful number, since it uses less digits than its factorization.

1212212102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650381.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212212102101 its reverse (1012012122121), we get a palindrome (2224224224222).

The spelling of 1212212102101 in words is "one trillion, two hundred twelve billion, two hundred twelve million, one hundred two thousand, one hundred one".