1020010001211 has 32 divisors (see below), whose sum is σ = 1514973196800. Its totient is φ = 678277519200.

The previous prime is 1020010001207. The next prime is 1020010001221. The reversal of 1020010001211 is 1121000100201.

It is a happy number.

It is not a de Polignac number, because 1020010001211 - 2² = 1020010001207 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 = 1020010001193 and 1020010001202.

It is not an unprimeable number, because it can be changed into a prime (1020010001221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17772261 + ... + 17829561.

It is an arithmetic number, because the mean of its divisors is an integer number (47342912400).

Almost surely, 2^{1020010001211} is an apocalyptic number.

1020010001211 is a deficient number, since it is larger than the sum of its proper divisors (494963195589).

1020010001211 is a wasteful number, since it uses less digits than its factorization.

1020010001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58976 (or 58970 counting only the distinct ones).

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

Adding to 1020010001211 its reverse (1121000100201), we get a palindrome (2141010101412).

The spelling of 1020010001211 in words is "one trillion, twenty billion, ten million, one thousand, two hundred eleven".