1020001211010 has 32 divisors (see below), whose sum is σ = 2720003230080. Its totient is φ = 272000322864.

The previous prime is 1020001210937. The next prime is 1020001211023. The reversal of 1020001211010 is 101121000201.

It is a happy number.

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 = 1020001210983 and 1020001211001.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1888890862 + ... + 1888891401.

It is an arithmetic number, because the mean of its divisors is an integer number (85000100940).

Almost surely, 2^{1020001211010} is an apocalyptic number.

1020001211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1020001211010 is an abundant number, since it is smaller than the sum of its proper divisors (1700002019070).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020001211010 is a wasteful number, since it uses less digits than its factorization.

1020001211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3777782279 (or 3777782273 counting only the distinct ones).

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

Adding to 1020001211010 its reverse (101121000201), we get a palindrome (1121122211211).

It can be divided in two parts, 102000 and 1211010, that added together give a triangular number (1313010 = T₁₆₂₀).

The spelling of 1020001211010 in words is "one trillion, twenty billion, one million, two hundred eleven thousand, ten".