1212223210101 has 96 divisors (see below), whose sum is σ = 1907328923136. Its totient is φ = 739065600000.

The previous prime is 1212223210097. The next prime is 1212223210109. The reversal of 1212223210101 is 1010123222121.

1212223210101 is a `hidden beast` number, since 1 + 21 + 222 + 321 + 0 + 101 = 666.

It is not a de Polignac number, because 1212223210101 - 2² = 1212223210097 is a prime.

It is a super-2 number, since 2×1212223210101² (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 (1212223210109) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 515619076 + ... + 515621426.

It is an arithmetic number, because the mean of its divisors is an integer number (19868009616).

Almost surely, 2^{1212223210101} is an apocalyptic number.

It is an amenable number.

1212223210101 is a deficient number, since it is larger than the sum of its proper divisors (695105713035).

1212223210101 is a wasteful number, since it uses less digits than its factorization.

1212223210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3083 (or 3080 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1212223210101 its reverse (1010123222121), we get a palindrome (2222346432222).

The spelling of 1212223210101 in words is "one trillion, two hundred twelve billion, two hundred twenty-three million, two hundred ten thousand, one hundred one".