20001121122102 has 16 divisors (see below), whose sum is σ = 40002634916352. Its totient is φ = 6666974928680.

The previous prime is 20001121122083. The next prime is 20001121122127. The reversal of 20001121122102 is 20122112110002.

It is a super-2 number, since 2×20001121122102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 15697098 + ... + 16923389.

It is an arithmetic number, because the mean of its divisors is an integer number (2500164682272).

Almost surely, 2^{20001121122102} is an apocalyptic number.

20001121122102 is an abundant number, since it is smaller than the sum of its proper divisors (20001513794250).

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

20001121122102 is a wasteful number, since it uses less digits than its factorization.

20001121122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32722683.

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

Adding to 20001121122102 its reverse (20122112110002), we get a palindrome (40123233232104).

The spelling of 20001121122102 in words is "twenty trillion, one billion, one hundred twenty-one million, one hundred twenty-two thousand, one hundred two".