122002421522 has 4 divisors (see below), whose sum is σ = 183003632286. Its totient is φ = 61001210760.

The previous prime is 122002421509. The next prime is 122002421543. The reversal of 122002421522 is 225124200221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 114292001041 + 7710420481 = 338071^2 + 87809^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30500605379 + ... + 30500605382.

Almost surely, 2^122002421522 is an apocalyptic number.

122002421522 is a deficient number, since it is larger than the sum of its proper divisors (61001210764).

122002421522 is an equidigital number, since it uses as much as digits as its factorization.

122002421522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61001210763.

The product of its (nonzero) digits is 1280, while the sum is 23.

Adding to 122002421522 its reverse (225124200221), we get a palindrome (347126621743).

The spelling of 122002421522 in words is "one hundred twenty-two billion, two million, four hundred twenty-one thousand, five hundred twenty-two".