101221222111212 has 24 divisors (see below), whose sum is σ = 269923258963456. Its totient is φ = 28920349174608.

The previous prime is 101221222111157. The next prime is 101221222111249. The reversal of 101221222111212 is 212111222122101.

It is a super-2 number, since 2×101221222111212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602507274388 + ... + 602507274555.

Almost surely, 2^{101221222111212} is an apocalyptic number.

101221222111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101221222111212 is an abundant number, since it is smaller than the sum of its proper divisors (168702036852244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101221222111212 is a wasteful number, since it uses less digits than its factorization.

101221222111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205014548957 (or 1205014548955 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 101221222111212 its reverse (212111222122101), we get a palindrome (313332444233313).

The spelling of 101221222111212 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twelve".