781220222101002 has 8 divisors (see below), whose sum is σ = 1562440444202016. Its totient is φ = 260406740700332.

The previous prime is 781220222100949. The next prime is 781220222101003. The reversal of 781220222101002 is 200101222022187.

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

781220222101002 is an admirable number.

It is a super-2 number, since 2×781220222101002² (a number of 31 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (781220222101003) 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, 65101685175078 + ... + 65101685175089.

It is an arithmetic number, because the mean of its divisors is an integer number (195305055525252).

Almost surely, 2^{781220222101002} is an apocalyptic number.

781220222101002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

781220222101002 is a wasteful number, since it uses less digits than its factorization.

781220222101002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130203370350172.

The product of its (nonzero) digits is 3584, while the sum is 30.

Adding to 781220222101002 its reverse (200101222022187), we get a palindrome (981321444123189).

The spelling of 781220222101002 in words is "seven hundred eighty-one trillion, two hundred twenty billion, two hundred twenty-two million, one hundred one thousand, two".