1021121541402 has 8 divisors (see below), whose sum is σ = 2042243082816. Its totient is φ = 340373847132.

The previous prime is 1021121541397. The next prime is 1021121541449. The reversal of 1021121541402 is 2041451211201.

It is a sphenic number, since it is the product of 3 distinct primes.

1021121541402 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85093461778 + ... + 85093461789.

It is an arithmetic number, because the mean of its divisors is an integer number (255280385352).

Almost surely, 2^{1021121541402} is an apocalyptic number.

1021121541402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1021121541402 is a wasteful number, since it uses less digits than its factorization.

1021121541402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170186923572.

The product of its (nonzero) digits is 640, while the sum is 24.

Adding to 1021121541402 its reverse (2041451211201), we get a palindrome (3062572752603).

The spelling of 1021121541402 in words is "one trillion, twenty-one billion, one hundred twenty-one million, five hundred forty-one thousand, four hundred two".