20010121022 has 4 divisors (see below), whose sum is σ = 30015181536. Its totient is φ = 10005060510.

The previous prime is 20010121013. The next prime is 20010121063. The reversal of 20010121022 is 22012101002.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 20010120994 and 20010121012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5002530254 + ... + 5002530257.

It is an arithmetic number, because the mean of its divisors is an integer number (7503795384).

Almost surely, 2^20010121022 is an apocalyptic number.

20010121022 is a deficient number, since it is larger than the sum of its proper divisors (10005060514).

20010121022 is a wasteful number, since it uses less digits than its factorization.

20010121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10005060513.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20010121022 its reverse (22012101002), we get a palindrome (42022222024).

The spelling of 20010121022 in words is "twenty billion, ten million, one hundred twenty-one thousand, twenty-two".