1002021211020 has 48 divisors (see below), whose sum is σ = 2805734786400. Its totient is φ = 267198475776.

The previous prime is 1002021210997. The next prime is 1002021211031. The reversal of 1002021211020 is 201121202001.

1002021211020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1002021210987 and 1002021211005.

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, 2253024 + ... + 2660856.

It is an arithmetic number, because the mean of its divisors is an integer number (58452808050).

Almost surely, 2^{1002021211020} is an apocalyptic number.

1002021211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002021211020 is an abundant number, since it is smaller than the sum of its proper divisors (1803713575380).

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

1002021211020 is a wasteful number, since it uses less digits than its factorization.

1002021211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448794 (or 448792 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1002021211020 its reverse (201121202001), we get a palindrome (1203142413021).

The spelling of 1002021211020 in words is "one trillion, two billion, twenty-one million, two hundred eleven thousand, twenty".