1001122220212 has 6 divisors (see below), whose sum is σ = 1751963885378. Its totient is φ = 500561110104.

The previous prime is 1001122220183. The next prime is 1001122220309. The reversal of 1001122220212 is 2120222211001.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 774266245776 + 226855974436 = 879924^2 + 476294^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125140277523 + ... + 125140277530.

Almost surely, 2^{1001122220212} is an apocalyptic number.

It is an amenable number.

1001122220212 is a deficient number, since it is larger than the sum of its proper divisors (750841665166).

1001122220212 is a wasteful number, since it uses less digits than its factorization.

1001122220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250280555057 (or 250280555055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1001122220212 its reverse (2120222211001), we get a palindrome (3121344431213).

The spelling of 1001122220212 in words is "one trillion, one billion, one hundred twenty-two million, two hundred twenty thousand, two hundred twelve".