20101210202122 has 16 divisors (see below), whose sum is σ = 34730549913600. Its totient is φ = 8546971266288.

The previous prime is 20101210202077. The next prime is 20101210202137. The reversal of 20101210202122 is 22120201210102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20101210202096 and 20101210202105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5652756997 + ... + 5652760552.

It is an arithmetic number, because the mean of its divisors is an integer number (2170659369600).

Almost surely, 2^{20101210202122} is an apocalyptic number.

20101210202122 is a deficient number, since it is larger than the sum of its proper divisors (14629339711478).

20101210202122 is a wasteful number, since it uses less digits than its factorization.

20101210202122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11305517685.

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

Adding to 20101210202122 its reverse (22120201210102), we get a palindrome (42221411412224).

The spelling of 20101210202122 in words is "twenty trillion, one hundred one billion, two hundred ten million, two hundred two thousand, one hundred twenty-two".