20021101012 has 12 divisors (see below), whose sum is σ = 38222102016. Its totient is φ = 9100500440.

The previous prime is 20021101003. The next prime is 20021101013. The reversal of 20021101012 is 21010112002.

It is a self number, because there is not a number n which added to its sum of digits gives 20021101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021101013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227512468 + ... + 227512555.

It is an arithmetic number, because the mean of its divisors is an integer number (3185175168).

Almost surely, 2^20021101012 is an apocalyptic number.

20021101012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021101012 is a deficient number, since it is larger than the sum of its proper divisors (18201001004).

20021101012 is a wasteful number, since it uses less digits than its factorization.

20021101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455025038 (or 455025036 counting only the distinct ones).

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

Adding to 20021101012 its reverse (21010112002), we get a palindrome (41031213014).

The spelling of 20021101012 in words is "twenty billion, twenty-one million, one hundred one thousand, twelve".