20101001102002 has 4 divisors (see below), whose sum is σ = 30151501653006. Its totient is φ = 10050500551000.

The previous prime is 20101001101963. The next prime is 20101001102003. The reversal of 20101001102002 is 20020110010102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13634859036681 + 6466142065321 = 3692541^2 + 2542861^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20101001102002.

It is not an unprimeable number, because it can be changed into a prime (20101001102003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5025250275499 + ... + 5025250275502.

Almost surely, 2^{20101001102002} is an apocalyptic number.

20101001102002 is a deficient number, since it is larger than the sum of its proper divisors (10050500551004).

20101001102002 is a wasteful number, since it uses less digits than its factorization.

20101001102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050500551003.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20101001102002 its reverse (20020110010102), we get a palindrome (40121111112104).

The spelling of 20101001102002 in words is "twenty trillion, one hundred one billion, one million, one hundred two thousand, two".