1102221212121 has 6 divisors (see below), whose sum is σ = 1592097306410. Its totient is φ = 734814141408.

The previous prime is 1102221212119. The next prime is 1102221212143. The reversal of 1102221212121 is 1212121222011.

1102221212121 is a `hidden beast` number, since 110 + 2 + 221 + 212 + 121 = 666.

It can be written as a sum of positive squares in only one way, i.e., 885172378896 + 217048833225 = 940836^2 + 465885^2 .

It is not a de Polignac number, because 1102221212121 - 2¹ = 1102221212119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1102221212094 and 1102221212103.

It is not an unprimeable number, because it can be changed into a prime (1102221212111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61234511776 + ... + 61234511793.

Almost surely, 2^{1102221212121} is an apocalyptic number.

It is an amenable number.

1102221212121 is a deficient number, since it is larger than the sum of its proper divisors (489876094289).

1102221212121 is a wasteful number, since it uses less digits than its factorization.

1102221212121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122469023575 (or 122469023572 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1102221212121 its reverse (1212121222011), we get a palindrome (2314342434132).

The spelling of 1102221212121 in words is "one trillion, one hundred two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred twenty-one".