1200246420021 has 48 divisors (see below), whose sum is σ = 1824469417344. Its totient is φ = 700753680000.

The previous prime is 1200246420019. The next prime is 1200246420083.

It is a happy number.

1200246420021 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1200246420021 - 2¹ = 1200246420019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1200246419973 and 1200246420000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200246422021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 914136 + ... + 1798926.

It is an arithmetic number, because the mean of its divisors is an integer number (38009779528).

Almost surely, 2^{1200246420021} is an apocalyptic number.

1200246420021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1200246420021 is a deficient number, since it is larger than the sum of its proper divisors (624222997323).

1200246420021 is a wasteful number, since it uses less digits than its factorization.

1200246420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884954 (or 884943 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The spelling of 1200246420021 in words is "one trillion, two hundred billion, two hundred forty-six million, four hundred twenty thousand, twenty-one".