1220021022001 has 16 divisors (see below), whose sum is σ = 1254217434624. Its totient is φ = 1186091270784.

The previous prime is 1220021021993. The next prime is 1220021022023. The reversal of 1220021022001 is 1002201200221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1220021022001 - 2³ = 1220021021993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220021022061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91060035 + ... + 91073431.

It is an arithmetic number, because the mean of its divisors is an integer number (78388589664).

Almost surely, 2^{1220021022001} is an apocalyptic number.

It is an amenable number.

1220021022001 is a deficient number, since it is larger than the sum of its proper divisors (34196412623).

1220021022001 is a wasteful number, since it uses less digits than its factorization.

1220021022001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23160.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1220021022001 its reverse (1002201200221), we get a palindrome (2222222222222).

The spelling of 1220021022001 in words is "one trillion, two hundred twenty billion, twenty-one million, twenty-two thousand, one".