1202423430021 has 8 divisors (see below), whose sum is σ = 1748979534624. Its totient is φ = 728741472720.

The previous prime is 1202423430007. The next prime is 1202423430029. The reversal of 1202423430021 is 1200343242021.

It is a happy number.

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

It is not a de Polignac number, because 1202423430021 - 2¹¹ = 1202423427973 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1202423429973 and 1202423430000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202423430029) 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, 18218536786 + ... + 18218536851.

It is an arithmetic number, because the mean of its divisors is an integer number (218622441828).

Almost surely, 2^{1202423430021} is an apocalyptic number.

1202423430021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1202423430021 is a deficient number, since it is larger than the sum of its proper divisors (546556104603).

1202423430021 is a wasteful number, since it uses less digits than its factorization.

1202423430021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36437073651.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 1202423430021 its reverse (1200343242021), we get a palindrome (2402766672042).

The spelling of 1202423430021 in words is "one trillion, two hundred two billion, four hundred twenty-three million, four hundred thirty thousand, twenty-one".