20001012011122 has 4 divisors (see below), whose sum is σ = 30001518016686. Its totient is φ = 10000506005560.

The previous prime is 20001012011107. The next prime is 20001012011137. The reversal of 20001012011122 is 22111021010002.

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

It is an interprime number because it is at equal distance from previous prime (20001012011107) and next prime (20001012011137).

It can be written as a sum of positive squares in only one way, i.e., 19921216495761 + 79795515361 = 4463319^2 + 282481^2 .

It is a super-2 number, since 2×20001012011122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000253002779 + ... + 5000253002782.

Almost surely, 2^{20001012011122} is an apocalyptic number.

20001012011122 is a deficient number, since it is larger than the sum of its proper divisors (10000506005564).

20001012011122 is a wasteful number, since it uses less digits than its factorization.

20001012011122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000506005563.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20001012011122 its reverse (22111021010002), we get a palindrome (42112033021124).

The spelling of 20001012011122 in words is "twenty trillion, one billion, twelve million, eleven thousand, one hundred twenty-two".