1212220022201 has 12 divisors (see below), whose sum is σ = 1242147225600. Its totient is φ = 1182998086200.

The previous prime is 1212220022191. The next prime is 1212220022263. The reversal of 1212220022201 is 1022200222121.

It is a happy number.

It is not a de Polignac number, because 1212220022201 - 2¹⁴ = 1212220005817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212220022201.

It is not an unprimeable number, because it can be changed into a prime (1212210022201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1843400 + ... + 2412998.

It is an arithmetic number, because the mean of its divisors is an integer number (103512268800).

Almost surely, 2^{1212220022201} is an apocalyptic number.

It is an amenable number.

1212220022201 is a deficient number, since it is larger than the sum of its proper divisors (29927203399).

1212220022201 is an equidigital number, since it uses as much as digits as its factorization.

1212220022201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 570836 (or 570793 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1212220022201 its reverse (1022200222121), we get a palindrome (2234420244322).

The spelling of 1212220022201 in words is "one trillion, two hundred twelve billion, two hundred twenty million, twenty-two thousand, two hundred one".