1220102020001 has 4 divisors (see below), whose sum is σ = 1220105702832. Its totient is φ = 1220098337172.

The previous prime is 1220102019949. The next prime is 1220102020013. The reversal of 1220102020001 is 1000202010221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220102020001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220102020201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1289291 + ... + 2025456.

It is an arithmetic number, because the mean of its divisors is an integer number (305026425708).

Almost surely, 2^{1220102020001} is an apocalyptic number.

It is an amenable number.

1220102020001 is a deficient number, since it is larger than the sum of its proper divisors (3682831).

1220102020001 is an equidigital number, since it uses as much as digits as its factorization.

1220102020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3682830.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220102020001 its reverse (1000202010221), we get a palindrome (2220304030222).

The spelling of 1220102020001 in words is "one trillion, two hundred twenty billion, one hundred two million, twenty thousand, one".