10001021222122 has 64 divisors (see below), whose sum is σ = 17544410763264. Its totient is φ = 4187450096640.

The previous prime is 10001021222083. The next prime is 10001021222123. The reversal of 10001021222122 is 22122212010001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10001021222096 and 10001021222105.

It is not an unprimeable number, because it can be changed into a prime (10001021222123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64468983 + ... + 64623925.

It is an arithmetic number, because the mean of its divisors is an integer number (274131418176).

Almost surely, 2^{10001021222122} is an apocalyptic number.

10001021222122 is a deficient number, since it is larger than the sum of its proper divisors (7543389541142).

10001021222122 is a wasteful number, since it uses less digits than its factorization.

10001021222122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155623.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10001021222122 its reverse (22122212010001), we get a palindrome (32123233232123).

The spelling of 10001021222122 in words is "ten trillion, one billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".