1221010202023 has 8 divisors (see below), whose sum is σ = 1240918239600. Its totient is φ = 1201188161088.

The previous prime is 1221010202011. The next prime is 1221010202051. The reversal of 1221010202023 is 3202020101221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221010202023 - 2¹³ = 1221010193831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1221010201988 and 1221010202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221010202003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21470533 + ... + 21527326.

It is an arithmetic number, because the mean of its divisors is an integer number (155114779950).

Almost surely, 2^{1221010202023} is an apocalyptic number.

1221010202023 is a deficient number, since it is larger than the sum of its proper divisors (19908037577).

1221010202023 is an equidigital number, since it uses as much as digits as its factorization.

1221010202023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42998321.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 1221010202023 its reverse (3202020101221), we get a palindrome (4423030303244).

The spelling of 1221010202023 in words is "one trillion, two hundred twenty-one billion, ten million, two hundred two thousand, twenty-three".