20210101210122 has 32 divisors (see below), whose sum is σ = 42187101125760. Its totient is φ = 6442349210880.

The previous prime is 20210101210121. The next prime is 20210101210127. The reversal of 20210101210122 is 22101210101202.

It is not an unprimeable number, because it can be changed into a prime (20210101210121) 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, 15875547 + ... + 17101262.

It is an arithmetic number, because the mean of its divisors is an integer number (1318346910180).

Almost surely, 2^{20210101210122} is an apocalyptic number.

20210101210122 is an abundant number, since it is smaller than the sum of its proper divisors (21976999915638).

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

20210101210122 is a wasteful number, since it uses less digits than its factorization.

20210101210122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32981278.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20210101210122 its reverse (22101210101202), we get a palindrome (42311311311324).

The spelling of 20210101210122 in words is "twenty trillion, two hundred ten billion, one hundred one million, two hundred ten thousand, one hundred twenty-two".