10020122220121 has 16 divisors (see below), whose sum is σ = 11056637869200. Its totient is φ = 9021672852480.

The previous prime is 10020122220107. The next prime is 10020122220127. The reversal of 10020122220121 is 12102222102001.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 4168391888896 + 5851730331225 = 2041664^2 + 2419035^2 .

It is not a de Polignac number, because 10020122220121 - 2⁷ = 10020122219993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10020122220095 and 10020122220104.

It is not an unprimeable number, because it can be changed into a prime (10020122220127) 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, 156661 + ... + 4479373.

It is an arithmetic number, because the mean of its divisors is an integer number (691039866825).

Almost surely, 2^{10020122220121} is an apocalyptic number.

It is an amenable number.

10020122220121 is a deficient number, since it is larger than the sum of its proper divisors (1036515649079).

10020122220121 is a wasteful number, since it uses less digits than its factorization.

10020122220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4327116.

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

Adding to 10020122220121 its reverse (12102222102001), we get a palindrome (22122344322122).

The spelling of 10020122220121 in words is "ten trillion, twenty billion, one hundred twenty-two million, two hundred twenty thousand, one hundred twenty-one".