1226213652040 has 64 divisors (see below), whose sum is σ = 2972713867200. Its totient is φ = 452526650112.

The previous prime is 1226213652031. The next prime is 1226213652043. The reversal of 1226213652040 is 402563126221.

It is a junction number, because it is equal to n+sod(n) for n = 1226213651987 and 1226213652005.

It is not an unprimeable number, because it can be changed into a prime (1226213652043) 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, 433299 + ... + 1624861.

It is an arithmetic number, because the mean of its divisors is an integer number (46448654175).

Almost surely, 2^{1226213652040} is an apocalyptic number.

1226213652040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1226213652040 is an abundant number, since it is smaller than the sum of its proper divisors (1746500215160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226213652040 is a wasteful number, since it uses less digits than its factorization.

1226213652040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193566 (or 1193562 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 34.

Adding to 1226213652040 its reverse (402563126221), we get a palindrome (1628776778261).

The spelling of 1226213652040 in words is "one trillion, two hundred twenty-six billion, two hundred thirteen million, six hundred fifty-two thousand, forty".