20102211102102 has 32 divisors (see below), whose sum is σ = 42599303764992. Its totient is φ = 6302144098944.

The previous prime is 20102211102091. The next prime is 20102211102109. The reversal of 20102211102102 is 20120111220102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102211102109) 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, 69103098 + ... + 69393389.

It is an arithmetic number, because the mean of its divisors is an integer number (1331228242656).

Almost surely, 2^{20102211102102} is an apocalyptic number.

20102211102102 is an abundant number, since it is smaller than the sum of its proper divisors (22497092662890).

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

20102211102102 is a wasteful number, since it uses less digits than its factorization.

20102211102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138497932.

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

Adding to 20102211102102 its reverse (20120111220102), we get a palindrome (40222322322204).

The spelling of 20102211102102 in words is "twenty trillion, one hundred two billion, two hundred eleven million, one hundred two thousand, one hundred two".