1020000011211 has 20 divisors (see below), whose sum is σ = 1545164344944. Its totient is φ = 670422538800.

The previous prime is 1020000011183. The next prime is 1020000011221. The reversal of 1020000011211 is 1121100000201.

It is a happy number.

It is not a de Polignac number, because 1020000011211 - 2¹³ = 1020000003019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1020000011193 and 1020000011202.

It is not an unprimeable number, because it can be changed into a prime (1020000011221) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 88674480 + ... + 88685981.

Almost surely, 2^{1020000011211} is an apocalyptic number.

1020000011211 is a deficient number, since it is larger than the sum of its proper divisors (525164333733).

1020000011211 is an equidigital number, since it uses as much as digits as its factorization.

1020000011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177360544 (or 177360535 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 1020000011211 its reverse (1121100000201), we get a palindrome (2141100011412).

The spelling of 1020000011211 in words is "one trillion, twenty billion, eleven thousand, two hundred eleven".