1012212334221 has 64 divisors (see below), whose sum is σ = 1592616370176. Its totient is φ = 564902374400.

The previous prime is 1012212334157. The next prime is 1012212334249. The reversal of 1012212334221 is 1224332122101.

It is a cyclic number.

It is not a de Polignac number, because 1012212334221 - 2⁶ = 1012212334157 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1012212334191 and 1012212334200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012212334121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 124790956 + ... + 124799066.

It is an arithmetic number, because the mean of its divisors is an integer number (24884630784).

Almost surely, 2^{1012212334221} is an apocalyptic number.

1012212334221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012212334221 is a deficient number, since it is larger than the sum of its proper divisors (580404035955).

1012212334221 is a wasteful number, since it uses less digits than its factorization.

1012212334221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12922.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1012212334221 its reverse (1224332122101), we get a palindrome (2236544456322).

The spelling of 1012212334221 in words is "one trillion, twelve billion, two hundred twelve million, three hundred thirty-four thousand, two hundred twenty-one".