1212220000101 has 16 divisors (see below), whose sum is σ = 1820107450368. Its totient is φ = 710979471600.

The previous prime is 1212220000087. The next prime is 1212220000109. The reversal of 1212220000101 is 1010000222121.

It is not a de Polignac number, because 1212220000101 - 2⁷ = 1212219999973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212220000109) 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, 592481871 + ... + 592483916.

It is an arithmetic number, because the mean of its divisors is an integer number (113756715648).

Almost surely, 2^{1212220000101} is an apocalyptic number.

1212220000101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212220000101 is a deficient number, since it is larger than the sum of its proper divisors (607887450267).

1212220000101 is a wasteful number, since it uses less digits than its factorization.

1212220000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184965832.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1212220000101 its reverse (1010000222121), we get a palindrome (2222220222222).

It can be divided in two parts, 121 and 2220000101, that added together give a palindrome (2220000222).

The spelling of 1212220000101 in words is "one trillion, two hundred twelve billion, two hundred twenty million, one hundred one", and thus it is an aban number.